99 results
Search Results
2. Pre-cut Filter Paper for Detecting Anti-Japanese Encephalitis Virus IgM from Dried Cerebrospinal Fluid Spots.
- Author
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Bharucha T, Chanthongthip A, Phuangpanom S, Phonemixay O, Sengvilaipaseuth O, Vongsouvath M, Lee S, Newton PN, and Dubot-Pérès A
- Subjects
- Desiccation, Humans, Laos, Mycobacterium, Pilot Projects, Retrospective Studies, Temperature, Antibodies, Viral cerebrospinal fluid, Cerebrospinal Fluid chemistry, Encephalitis Virus, Japanese immunology, Encephalitis, Japanese diagnosis, Immunoglobulin M cerebrospinal fluid, Paper, Specimen Handling methods
- Abstract
Background: The use of filter paper as a simple, inexpensive tool for storage and transportation of blood, 'Dried Blood Spots' or Guthrie cards, for diagnostic assays is well-established. In contrast, there are a paucity of diagnostic evaluations of dried cerebrospinal fluid (CSF) spots. These have potential applications in low-resource settings, such as Laos, where laboratory facilities for central nervous system (CNS) diagnostics are only available in Vientiane. In Laos, a major cause of CNS infection is Japanese encephalitis virus (JEV). We aimed to develop a dried CSF spot protocol and to evaluate its diagnostic performance using the World Health Organisation recommended anti-JEV IgM antibody capture enzyme-linked immunosorbent assay (JEV MAC-ELISA)., Methodology and Principal Findings: Sample volumes, spotting techniques and filter paper type were evaluated using a CSF-substitute of anti-JEV IgM positive serum diluted in Phosphate Buffer Solution (PBS) to end-limits of detection by JEV MAC-ELISA. A conventional protocol, involving eluting one paper punch in 200 μl PBS, did not detect the end-dilution, nor did multiple punches utilising diverse spotting techniques. However, pre-cut filter paper enabled saturation with five times the volume of CSF-substitute, sufficiently improving sensitivity to detect the end-dilution. The diagnostic accuracy of this optimised protocol was compared with routine, neat CSF in a pilot, retrospective study of JEV MAC-ELISA on consecutive CSF samples, collected 2009-15, from three Lao hospitals. In comparison to neat CSF, 132 CSF samples stored as dried CSF spots for one month at 25-30 °C showed 81.6% (65.7-92.3 95%CI) positive agreement, 96.8% (91.0-99.3 95%CI) negative agreement, with a kappa coefficient of 0.81 (0.70-0.92 95%CI)., Conclusions/significance: The novel design of pre-cut filter paper saturated with CSF could provide a useful tool for JEV diagnostics in settings with limited laboratory access. It has the potential to improve national JEV surveillance and inform vaccination policies. The saturation of filter paper has potential use in the wider context of pathogen detection, including dried spots for detecting other analytes in CSF, and other body fluids.
- Published
- 2016
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3. The use of dried cerebrospinal fluid filter paper spots as a substrate for PCR diagnosis of the aetiology of bacterial meningitis in the Lao PDR.
- Author
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Elliott I, Dittrich S, Paris D, Sengduanphachanh A, Phoumin P, and Newton PN
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- Adolescent, Bacteria genetics, Bacteria isolation & purification, Bacterial Load instrumentation, Bacterial Load methods, Child, Child, Preschool, DNA, Bacterial chemistry, DNA, Bacterial genetics, Humans, Infant, Laos, Limit of Detection, Meningitis, Bacterial diagnosis, Meningitis, Bacterial microbiology, Molecular Typing methods, Prospective Studies, Bacteria classification, DNA, Bacterial cerebrospinal fluid, Meningitis, Bacterial cerebrospinal fluid, Molecular Typing instrumentation, Paper
- Abstract
We investigated whether dried cerebrospinal fluid (CSF) conserved on filter paper can be used as a substrate for accurate PCR diagnosis of important causes of bacterial meningitis in the Lao PDR. Using mock CSF, we investigated and optimized filter paper varieties, paper punch sizes, elution volumes and quantities of DNA template to achieve sensitive and reliable detection of bacterial DNA from filter paper specimens. FTA Elute Micro Card™ (Whatman, Maidstone, UK) was the most sensitive, consistent and practical variety of filter paper. Following optimization, the lower limit of detection for Streptococcus pneumoniae from dried mock CSF spots was 14 genomic equivalents (GE)/μL (interquartile range 5.5 GE/μL) or 230 (IQR 65) colony forming units/mL. A prospective clinical evaluation for S. pneumoniae, S. suis and Neisseria meningitidis was performed. Culture and PCR performed on fresh liquid CSF from patients admitted with a clinical diagnosis of meningitis (n = 73) were compared with results derived from dried CSF spots. Four of five fresh PCR-positive CSF samples also tested PCR positive from dried CSF spots, with one patient under the limit of detection. In a retrospective study of S. pneumoniae samples (n = 20), the median (IQR; range) CSF S. pneumoniae bacterial load was 1.1 × 10(4) GE/μL (1.2 × 10(5) ; 1 to 6.1 × 10(6) DNA GE/μL). Utilizing the optimized methodology, we estimate an extrapolated sensitivity of 90%, based on the range of CSF genome counts found in Laos. Dried CSF filter paper spots could potentially help us to better understand the epidemiology of bacterial meningitis in resource-poor settings and guide empirical treatments and vaccination policies., (© 2013 The Authors. Clinical Microbiology and Infection published by John Wiley & Sons Ltd on behalf of the European Society of Clinical Microbiology and Infectious Disease.)
- Published
- 2013
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4. Detection of human papillomavirus among women in Laos: feasibility of using filter paper card and prevalence of high-risk types.
- Author
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Phongsavan K, Gustavsson I, Marions L, Phengsavanh A, Wahlström R, and Gyllensten U
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- Adolescent, Adult, Cervix Uteri virology, Child, Cross-Sectional Studies, DNA, Viral genetics, Feasibility Studies, Female, Follow-Up Studies, Humans, Laos epidemiology, Middle Aged, Neoplasm Staging, Papillomaviridae genetics, Papillomavirus Infections epidemiology, Papillomavirus Infections virology, Prevalence, Prognosis, Real-Time Polymerase Chain Reaction, Risk Factors, Uterine Cervical Neoplasms epidemiology, Uterine Cervical Neoplasms virology, Young Adult, Paper, Papillomaviridae isolation & purification, Papillomavirus Infections diagnosis, Patient Identification Systems, Specimen Handling instrumentation, Uterine Cervical Neoplasms diagnosis, Vaginal Smears instrumentation
- Abstract
Background: Persistent infection with high-risk (HR) human papillomavirus (HPV) is a well-recognized cause of cervical cancer, but little is known about the situation in Laos. The aims of the study were to determine the prevalence of HR-HPV among Lao women and to evaluate the use of a filter paper card (FTA Elute Micro Card) for collection of cervical cells in the humid tropical climate., Methods: This is a cross-sectional study including 1922 women from 3 provinces in Laos. During a gynecological examination, cervical cells were collected and applied to the FTA card followed by HPV typing using a real-time polymerase chain reaction (PCR)-based assay., Results: Overall, 213 of the 1922 women were positive for HR-HPV (11%). The most common type was the group HPV33/52/58 (3%), followed by the single type 16 (2%) and the group 18/45 (1%), respectively. Only 11 cards (0.6%) did not contain a sufficient amount of genomic DNA for polymerase chain reaction-based analysis., Conclusions: The prevalence of HR-HPV infections in Laos is similar to other Asian countries, and 40% of the women with an HR-HPV infection will be target of the present HPV vaccines. The FTA card is suitable for collection of cervical cells for HR-HPV typing in tropical conditions. This information is important for planning and establishing primary and secondary prevention of cervical cancer in Laos.
- Published
- 2012
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5. Water, sanitation and hygiene: a situation analysis paper for Lao PDR.
- Author
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Lahiri S and Chanthaphone S
- Subjects
- Community-Institutional Relations, Decision Making, Humans, Laos, Public Health, Rural Population, Hygiene, Sanitation, Water Supply
- Abstract
The Lao People's Democratic Republic (Lao PDR) is located in the Greater Mekong sub-region in East Asia, neighbouring with China, Cambodia, Myanmar, Thailand and Vietnam, with a land area of 236,800 square kilometres, and an average population density of 22 persons per square kilometre. The population of Lao PDR is 5.5 million with 49 ethnic groups. Most of the population is located in rural areas, with a significant number of the neediest villages in remote localities. In the past decade, there have been many positive developments in the rural water supply and sanitation (RWSS) sector. Despite improved coverage in latrine and water supply services, health remains a serious problem. The improved services were often not sustained or poorly maintained, while hygiene received inadequate attention. In Lao PDR, as in many other countries, the provision of a safe and reliable water supply and appropriate sanitation services, based on sustainable approaches, therefore, remains a challenge. This paper will provide an overview of the Lao PDR's RWSS Sector. Special emphasis is placed on actual field level application of informed choices for water supply, sanitation and hygiene awareness.
- Published
- 2003
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6. Low seroprotection against diphtheria and tetanus in Lao adolescents.
- Author
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Vantava S, Hefele L, Virachith S, Vannachone S, Khounvisith V, Nouanthong P, Hübschen JM, Sayasone S, and Black AP
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- Child, Humans, Female, Adolescent, Laos epidemiology, Antibodies, Bacterial, Immunization, Secondary, Tetanus Toxoid, Tetanus prevention & control, Diphtheria prevention & control
- Abstract
Objectives: There is currently no booster diphtheria or tetanus vaccine for Lao children before adolescence, despite international recommendations. We investigated seroprotection against diphtheria and tetanus among Lao adolescents., Methods: Seven hundred seventy-nine serum samples were tested for anti-diphtheria and anti-tetanus antibodies., Results: Overall, 25.8% of the adolescents had antibody titers corresponding to protection against diphtheria and 30.9% to sufficient immunity against tetanus. Female participants >16 years were more likely to be protected against diphtheria (p < 0.001) and tetanus (p < 0.029)., Conclusion: Low protection against diphtheria and tetanus, possibly due to low vaccination coverage or antibody waning, suggests booster doses are warranted before adolescence., (© 2023 The Authors Tropical Medicine & International Health Published by John Wiley & Sons Ltd.)
- Published
- 2023
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7. Long-term monitoring of forest cover change resulting in forest loss in the capital of Luang Prabang province, Lao PDR.
- Author
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Thien BB, Yachongtou B, and Phuong VT
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- Laos, Forests, Agriculture, Conservation of Natural Resources methods, Environmental Monitoring methods, Satellite Imagery
- Abstract
Loss of forest cover has an important impact on global climate change. This study investigated variation in forest cover in Luang Prabang district, the capital of Luang Prabang province, Lao PDR, using Landsat Thematic Mapper (TM) and Operational Land Imager (OLI) satellite imagery over the period 1988-2021. The maximum likelihood classification technique was used to classify Landsat images of the years 1988, 2001, 2011, and 2021 and was evaluated for accuracy using the kappa coefficient for each year (0.860, 0.869, 0.878, and 0.950, respectively). The potential of classification based on the Normalized Difference Vegetation Index (NDVI) and Soil Adjusted Vegetation Index (SAVI) to detect changes in natural forest and cultivated forest cover compared with supervised classification was also evaluated. The natural forest cover of the study area was estimated at 84.09% (687.82 km
2 ) of the total land area in 1988. This number decreased to 56.93% (465.69 km2 ) in 2001 and subsequently increased to 60.85% (497.77 km2 ) in 2011 and 66.49% (543.92 km2 ) in 2021. Cultivated forest cover in 1988 was 4.96% (40.58 km2 ) and increased to 16.84% (137.76 km2 ) in 2001, however it decreased to 13.57% (110.97 km2 ) in 2011 and 9.67% (79.10 km2 ) in 2021. Severely reduced forest cover is often associated with the expansion of agriculture on the forest edge. Logging and charcoal production are other problems that contribute to the reduction of forest cover. Overall, our results show the necessity of forest management, rational land-use planning policy, and increased community awareness of conservation and sustainable development of forest resources in the study area in the future., (© 2023. The Author(s), under exclusive licence to Springer Nature Switzerland AG.)- Published
- 2023
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8. Financial burden and health-seeking behaviors related to chronic diseases under the National Health Insurance Scheme in Bolikhamxay Province, Lao PDR: a cross-sectional study.
- Author
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Ito T, Kounnavong S, and Miyoshi C
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- Humans, Cross-Sectional Studies, Laos, Health Expenditures, Chronic Disease, Patient Acceptance of Health Care, Financial Stress, National Health Programs
- Abstract
Background: Chronic diseases pose a serious threat to health and longevity worldwide. As chronic diseases require long periods of treatment and may become serious conditions, the ensuing financial burden is often worse than that for non-chronic diseases. In 2016, the Lao PDR implemented the National Health Insurance (NHI) system, which covers select provinces. However, data on health service accessibility and the financial burden on households, especially those with chronically ill members covered by the NHI, are scarce., Methods: This study used a cross-sectional design. Data collection was conducted in Bolikhamxay province (population = 273,691), from January 15 to February 13, 2019. In total, 487 households, selected through stratified random sampling, were surveyed via questionnaire-based interviews. Healthcare service usage and financial burden were examined., Results: A total of 370 households had at least one member with self-reported health issues within the last 3 months prior to the interview, while 170 had at least one member with a chronic condition. More than 75% of the households accessed a health facility when a member experienced health problems. The majority of households (43.2%) spent the maximum value covered by the NHI, but households in the second largest group (21.4%) spent 10 times the maximum value covered by the NHI. The prevalence of catastrophic health expenditure (i.e., health-related expenditure equivalent to > 20% of total income) was 25.9% (20% threshold) and 16.2% (40% threshold). Through logistic regression, we found that the major factors determining financial catastrophes owing to health problems were household members with chronic illness, hospitalization, household poverty status, household size (for both the 20 and 40% thresholds), visiting a private facility (20% threshold), and distance from the province to the referral hospital (40% threshold)., Conclusions: The NHI system has had a positive effect on households' access to health facilities. However, catastrophic health expenditure remains high, especially among chronically ill patients. Facilities under the NHI system should be improved to provide more services, including care for chronic conditions., (© 2022. The Author(s).)
- Published
- 2022
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9. A multi-proxy approach to exploring Homo sapiens' arrival, environments and adaptations in Southeast Asia.
- Author
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Bacon AM, Bourgon N, Welker F, Cappellini E, Fiorillo D, Tombret O, Thi Mai Huong N, Anh Tuan N, Sayavonkhamdy T, Souksavatdy V, Sichanthongtip P, Antoine PO, Duringer P, Ponche JL, Westaway K, Joannes-Boyau R, Boesch Q, Suzzoni E, Frangeul S, Patole-Edoumba E, Zachwieja A, Shackelford L, Demeter F, Hublin JJ, and Dufour É
- Subjects
- History, Ancient, Humans, Laos, Rainforest, Vietnam, Acclimatization, Biological Evolution, Fossils, Tooth
- Abstract
The capability of Pleistocene hominins to successfully adapt to different types of tropical forested environments has long been debated. In order to investigate environmental changes in Southeast Asia during a critical period for the turnover of hominin species, we analysed palaeoenvironmental proxies from five late Middle to Late Pleistocene faunas. Human teeth discoveries have been reported at Duoi U'Oi, Vietnam (70-60 ka) and Nam Lot, Laos (86-72 ka). However, the use of palaeoproteomics allowed us to discard the latter, and, to date, no human remains older than ~ 70 ka are documented in the area. Our findings indicate that tropical rainforests were highly sensitive to climatic changes over that period, with significant fluctuations of the canopy forests. Locally, large-bodied faunas were resilient to these fluctuations until the cooling period of the Marine Isotope Stage 4 (MIS 4; 74-59 ka) that transformed the overall biotope. Then, under strong selective pressures, populations with new phenotypic characteristics emerged while some other species disappeared. We argue that this climate-driven shift offered new foraging opportunities for hominins in a novel rainforest environment and was most likely a key factor in the settlement and dispersal of our species during MIS 4 in SE Asia., (© 2021. The Author(s).)
- Published
- 2021
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10. Silica and secondary metabolites as chemophenetic markers for characterization of bamboo species in relation to genetic and morphometric analysis.
- Author
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Sonarkhan MP, Singh L, Sungkaew S, Souvannakhoummane K, and Thul ST
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- Bambusa chemistry, Bambusa metabolism, DNA Primers, Genotype, India, Laos, Plant Leaves chemistry, Plant Leaves metabolism, Random Amplified Polymorphic DNA Technique methods, Species Specificity, Thailand, Bambusa classification, Bambusa genetics, Phylogeny, Polymorphism, Genetic, Silicon Dioxide metabolism
- Abstract
Bamboo is a non-timber forest product and one of the most important grass plants of industrial and domestic use. It is widely distributed in tropical countries including India, China and Southeast Asian countries with wide genetic diversity. The diversity in the available genotypes becomes an important resource for the selection and improvement of the plants for ecological and commercial use. This study investigates eight commercially and ecologically important bamboo species of six genera (Bambusa, Dendrocalamus, Thyrsostachys, Vietnamosasa, Cephalostachyum and Indocalamus) from India, Thailand and Laos. These were evaluated for genetic differences by molecular makers, chemo-morphological variation and ability of silicon accumulation. The genetic cluster analyses of eight RAPD primers revealed genetic similarities in the ranges of 24-55%. The total silica content varied from 18.34 to 40.08 ppm in leaves of different bamboo species. Chemical analysis of the silicon content by ICP-OES and secondary metabolite profiling on TLC depicted the prominent distinction among the species. The PCA analysis of quantitative morphological data grouped the species in two major clusters and found to correlate with chemical pattern and genetic similarity to some extent. This is the first report that summarizes species-specific variability of leaf silica content, secondary metabolites, and quantitative morphological data towards delineation of genetic phylogeny of bamboo species.
- Published
- 2021
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11. Detection of highly pathogenic avian influenza in Sekong Province Lao PDR 2018-Potential for improved surveillance and management in endemic regions.
- Author
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Annand EJ, High H, Wong FYK, Phommachanh P, Chanthavisouk C, Happold J, Dhingra MS, Eagles D, Britton PN, and Alders RG
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- Animals, Disease Outbreaks prevention & control, Influenza in Birds epidemiology, Influenza in Birds parasitology, Influenza in Birds virology, Laos epidemiology, Poultry Diseases epidemiology, Poultry Diseases prevention & control, Poultry Diseases virology, Chickens, Disease Outbreaks veterinary, Influenza in Birds diagnosis, Poultry Diseases diagnosis
- Abstract
Significant global efforts have been directed towards understanding the epidemiology of highly pathogenic avian influenza (HPAI) across poultry production systems and in wild-bird reservoirs, yet understanding of disease dynamics in the village poultry setting remains limited. This article provides a detailed account of the first laboratory-confirmed outbreak of HPAI in the south-eastern provinces of Lao PDR, which occurred in a village in Sekong Province in October 2018. Perspectives from an anthropologist conducting fieldwork at the time of the outbreak, clinical and epidemiological observations by an Australian veterinarian are combined with laboratory characterization and sequencing of the virus to provide insights about disease dynamics, biosecurity, outbreak response and impediments to disease surveillance. Market-purchased chickens were considered the likely source of the outbreak. Observations highlighted the significance of a-lack-of pathognomonic clinical signs and commonness of high-mortality poultry disease with consequent importance of laboratory diagnosis. Sample submission and testing was found to be efficient, despite the village being far from the national veterinary diagnostic laboratory. Extensively raised poultry play key roles in ritual, livelihoods and nutrition of rural Lao PDR people. Unfortunately, mass mortality of chickens due to diseases such as HPAI and Newcastle disease (ND) imposes a significant burden on smallholders in Lao PDR, as in most other SE Asian countries. We observed that high mortality of chickens is perceived by locals as a new 'normal' in raising poultry; this sense of it being 'normal' is a disincentive to reporting of mortality events. Establishing effective people-centred disease-surveillance approaches with local benefit, improving market-biosecurity and veterinary-service support to control vaccine-preventable poultry diseases could all reduce mass-mortality event frequency, improve veterinary-producer relationships and increase the likelihood that mortality events are reported. Priority in each of these aspects should be on working with smallholders and local traders, appreciating and respecting their perspectives and local knowledge., (© 2020 Blackwell Verlag GmbH.)
- Published
- 2021
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12. On the true identity of Sergentomyia gemmea and description of a closely related species: Se. raynali n. sp.
- Author
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Depaquit J, Vongphayloth K, Siriyasatien P, Polseela R, Phumee A, Loyer M, Vol A, Varlot G, Rahola N, Brey PT, Sutherland IW, Hertz JC, Gay F, and Léger N
- Subjects
- Animals, Cytochromes b analysis, DNA, Mitochondrial analysis, Female, Insect Proteins analysis, Insect Vectors anatomy & histology, Insect Vectors genetics, Laos, Male, Psychodidae anatomy & histology, Psychodidae genetics, Sequence Analysis, DNA, Thailand, Insect Vectors classification, Psychodidae classification
- Abstract
Several species of Leishmania are responsible for leishmaniases in Thailand, although little is known about their transmission. Sergentomyia gemmea has been suspected several times to transmit Leishmania martiniquensis. Some captures carried out in Thailand and Lao People's Democratic Republic have emphasized the scarcity of Se. gemmea, comprising only 1% of the collected females. The sequencing of cytochrome B mtDNA of our specimens showed that our specimens are not grouped with other Se. gemmea previously deposited in GenBank. The latter are grouped with some Se. khawi and Se. hivernus that we processed in the present study. We suspect misidentifications and propose focusing on the most useful characters for identification of Se. gemmea based on the examination of type-specimens. The examination of the ascoids exhibiting anterior spurs is the most important one. However, we also describe Se. raynali n. sp. exhibiting comparable spurs but differing from Se. gemmea by its original cibarium. Finally, the vectorial role of Se. gemmea appears very questionable in the absence of new evidence., (© 2019 The Royal Entomological Society.)
- Published
- 2019
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13. Any port in a storm: coming to terms with HIV in Lao PDR.
- Author
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Lyttleton C
- Subjects
- Asia, Asia, Southeastern, Behavior, Developing Countries, Disease, Health, Laos, Psychology, Public Health, Sexual Behavior, Virus Diseases, Attitude, Epidemiology, Evaluation Studies as Topic, HIV Infections, Social Behavior
- Published
- 1999
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14. Survey shows shortcomings in male RH knowledge and practice.
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- Asia, Asia, Southeastern, Bangladesh, Behavior, Developing Countries, Health, Laos, Nepal, Philippines, Sampling Studies, Social Behavior, Data Collection, Knowledge, Reproductive Medicine, Research
- Published
- 2000
15. Enhancing the competencies of obstetrical nurses and midwives in high-risk pregnancy management through simulation-based training in Lao people's democratic republic: A pilot study.
- Author
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Sirisomboon R, Nuampa S, Leetheeragul J, Sudphet M, Pimol K, Sirithepmontree S, and Silavong L
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- Humans, Pilot Projects, Female, Pregnancy, Adult, Laos, Obstetric Nursing education, Obstetric Nursing standards, Nurse Midwives education, Nurse Midwives standards, Nurse Midwives statistics & numerical data, Midwifery education, Midwifery standards, Pregnancy, High-Risk, Southeast Asian People, Clinical Competence standards, Clinical Competence statistics & numerical data, Simulation Training methods, Simulation Training standards
- Abstract
Background: Simulation-based training has been widely used as a valuable strategy for learning and evaluating clinical skills at different levels of nursing and midwifery education. The impact of simulation training on intensive management for high-risk pregnancy in a low-resource setting has been limited., Aim: To examine the effect of simulation-based training with low-fidelity mannequins on obstetrical nurses and midwives' knowledge, attitude, and skills for high-risk pregnancy management in a low-resource setting., Method: During September 2023, twenty-five obstetrical nurses or midwives who worked in five tertiary public hospitals in Vientiane Prefecture participated in the three-day training workshops for intensive management in high-risk pregnant women and newborns that used a simulation-based training approach integrating problem-based learning. The evaluated criteria of knowledge, attitudes, and skills pre- and post-test scores were statistically compared., Findings: Workshop trainees demonstrated an increase significantly in knowledge for high-risk pregnancy management (p = 0.012), attitude toward high-risk pregnancy management (p = 0.000), and attitude toward simulation-based training design (p = 0.002). The clinical skills were used on the simulation performance checklist, and the pre-posttest gain in overall performance scores had a statistically significant difference (p = 0.000). The mean score of postpartum hemorrhage management skills was 11.48±2.23, which increased the highest score among all skills., Conclusions: The simulation-based training in high-risk pregnancy management improves the knowledge, attitude, and skills of nurses and midwives in low-resource settings. Next steps include direct observation of trainees in the clinical setting to assess their competence in ensuring patient safety, achieving positive pregnancy outcomes, and enhancing satisfaction., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2024
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16. Demand-driven capacity building for public health nutrition research in Lao PDR.
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Shively G, Ambikapathi R, Eddens K, Ghosh S, Gunaratna NS, Khamphouxay K, Oula R, Ratsavong K, Saylath T, Siengsounthone L, Sipes P, Sychareun V, Tekwe C, Thompson L, Thongmixay S, Vongxay M, Vongxay V, and Zoh R
- Subjects
- Laos, Humans, Research, Nutritional Sciences education, Capacity Building, Public Health
- Abstract
In Laos, rates of undernutrition, especially among children under 5 years of age, remain high. In response, a large multidisciplinary team embarked on a multi-year project in Laos beginning in 2019 with the purpose of institutional strengthening around public health nutrition research. This paper summarizes the Applied Nutrition Research Capacity Building project's activities, immediate project results, and prospects for sustaining impacts into the future. Eight primary activities were undertaken, including back-office strengthening, mentored research, and curriculum review and development. Requested training and skill development in areas related to public health nutrition, anthropometry, and research methods reached more than 1000 professionals. The first edition of a Lao-English Nutrition Glossary was produced, as was the country's first National Nutrition Research Agenda, a document which sets locally-identified priorities for future research. Project success was achieved by focusing on the priorities of project partners and the Lao government, as articulated in the Lao National Nutrition Strategy and Action Plan. Project design elements that could guide similar efforts undertaken elsewhere include multi-year engagement, an emphasis on sustained peer mentorship, and the use of an extended period of pre-planning in collaboration with project stakeholders prior to the start of activities., (© 2024. The Author(s).)
- Published
- 2024
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17. Case-control study to identify the causative agents of ophthalmia and conjunctivitis in goats in Savannakhet province of Lao PDR.
- Author
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Jayasekara PP, Jenkins C, Gerber PF, Olmo L, Xaikhue T, Theppangna W, and Walkden-Brown SW
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- Animals, Case-Control Studies, Laos epidemiology, Conjunctivitis veterinary, Conjunctivitis microbiology, Conjunctivitis epidemiology, Prevalence, Moraxella isolation & purification, Moraxella genetics, Mycoplasma conjunctivae genetics, Mycoplasma conjunctivae isolation & purification, Chlamydia isolation & purification, Chlamydia genetics, Chlamydia classification, Mycoplasma Infections veterinary, Mycoplasma Infections microbiology, Mycoplasma Infections epidemiology, Goats, Goat Diseases microbiology, Goat Diseases epidemiology, Phylogeny
- Abstract
Pinkeye is a highly contagious disease of goats with different aetiologies. Surveys in Lao PDR have identified eye lesions typical of pinkeye as a common condition, however, this has not been confirmed diagnostically, and the responsible pathogens have not been identified. A matched case-control study was implemented in 70 goat holdings from Savannakhet province, Lao PDR, to detect agents causing pinkeye and conduct phylogenetic analysis of the identified pathogens. Fifty eye swabs from goats with infected eyes (cases) and 50 paired samples from unaffected cohorts (controls) were collected from 25 holdings. Samples were tested using quantitative PCR assays targeting known pinkeye pathogens at the genus and species levels. The prevalence of pathogens in case and control goats was as follows: Mycoplasma conjunctivae (94% and 74% respectively, P = 0.006, OR = 5.5), Chlamydia pecorum (4%, 10%), Moraxella ovis (30%, 30%), Moraxella bovis (0%, 0%) and Moraxella bovoculi (0%, 0%). M. conjunctivae was present in a high proportion of goats in both groups revealing that Lao goats are carriers of M. conjunctivae. However, the mean log
10 genome copy number/µL of DNA extract was significantly higher in case goats than control goats (P < 0.05). Thus, M. conjunctivae is likely the principal causative agent of pinkeye in Lao goats with carrier status converting to clinical infection following corneal damage or other causative factors. M. conjunctivae detected in samples from different goats and districts showed low genetic diversity. Identifying the causes of pinkeye in Lao goats will assist in designing appropriate treatment and control strategies., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)- Published
- 2024
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18. Antibiotic prescribing practices and antibiotic use quality indicators in Luang Prabang, Lao PDR: a point prevalence survey in a tertiary care hospital.
- Author
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Elias C, Ha NT, Sengvilaipaserth O, Phaychith A, Chansamouth V, Phongsavath V, Keohavong B, Detleuxay K, Maniphonh P, Soukhaseum T, Vanhems P, and Babin FX
- Subjects
- Humans, Laos epidemiology, Female, Male, Adult, Middle Aged, Prevalence, Adolescent, Young Adult, Child, Aged, Surveys and Questionnaires, Drug Prescriptions statistics & numerical data, Drug Prescriptions standards, Child, Preschool, Quality Indicators, Health Care, Infant, Cross-Sectional Studies, Anti-Bacterial Agents therapeutic use, Tertiary Care Centers statistics & numerical data, Antimicrobial Stewardship, Practice Patterns, Physicians' statistics & numerical data, Practice Patterns, Physicians' standards, Guideline Adherence statistics & numerical data
- Abstract
Context: The increase and global dissemination of antibiotic resistance limit the use of antibiotics to prevent and treat infections. Implementing antibiotic stewardship programs guided by local data on prescription profiles is a useful strategy to reduce the burden of antibiotic resistance. The aim was to determine the prevalence of antibiotic use and guideline compliance at Luang Prabang provincial hospital, Lao PDR., Methods: A point prevalence survey of antibiotics was conducted among hospitalized patients admitted to Luang Prabang hospital (204 beds) in Lao PDR on May 25, 2023. All patients presenting at 8:00 AM were eligible. Sociodemographic data, indications for antibiotic use, and antibiotic prescriptions were collected from medical records using a paper-based questionnaire and entered into an electronic platform following WHO methodology. The prevalence of antibiotic use was determined., Results: Out of the 102 patients included, 60(58.8%) were undergoing antibiotic treatment, of which 33(55.0%) received combination therapy, and 7(10.5%) had two indications for antibiotic use. The highest prevalence was in the surgical ward (14/15, 93%) followed by general paediatrics (18/27, 67%). Out of the 100 antibiotic prescriptions, 47(47%) were for community-acquired infections, 26(26%) for surgical prophylaxis, 13(13%) for hospital-acquired infections and 5(5%) for medical prophylaxis. Twenty(20%) antibiotics were prescribed for obstetrics and gynaecology prophylaxis, 17(17%) for intra-abdominal infections, and 10(10.0%) for pneumonia treatment as well as bone, and joint infections. The main antibiotics prescribed were ceftriaxone 36(34.6%), metronidazole 18(17.3%), ampicillin 8(7.7%), and gentamicin 8(7.7%). Only 2(3%) samples were sent to the laboratory, one of which showed a positive culture for Escherichia coli Extended Spectrum β-Lactamase. According to the WHO Access Watch and Reserve classification, 55(52.9%) molecules belonged to the Access category, 47(49.1%) to the Watch category, and none to the Reserve category. Only 14.9% of antibiotic prescriptions were fully compliant with current guidelines., Conclusion: This study indicated a significant prevalence of antibiotic use and a very low compliance with guidelines at Luang Prabang provincial hospital, Lao PDR. This highlights an urgent need for comprehensive strategies at all levels to optimize antibiotic use in hospitals, emphasizing diagnostic improvements, and continued research to address the factors driving this excessive antibiotic usage and improve adherence to guidelines., (© 2024. The Author(s).)
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- 2024
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19. Spatial analysis of dengue fever incidence and serotype distribution in Vientiane Capital, Laos: A multi-year study.
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Phanhkongsy S, Suwannatrai A, Thinkhamrop K, Somlor S, Sorsavanh T, Tavinyan V, Sentian V, Khamphilavong S, Samountry B, and Phanthanawiboon S
- Subjects
- Laos epidemiology, Humans, Incidence, Female, Male, Young Adult, Child, Adult, Adolescent, Child, Preschool, Middle Aged, Infant, Aged, Infant, Newborn, Dengue epidemiology, Serogroup, Spatial Analysis, Dengue Virus classification, Dengue Virus isolation & purification
- Abstract
Laos is a hyperendemic country of all 4 dengue serotypes. Various factors contribute to the spread of the disease including viral itself, vectors, and environment. This study aims to analyze dengue data and its incidence in nine districts of Vientiane Capital, Laos spanning from 2019 to 2021 by data collected from Mittaphab Hospital. The Maximum Entropy algorithm (MaxEnt) was applied to assess spatial distribution and identify high-probability locations for dengue occurrence by analyzing crucial environmental and climatic conditions. Dengue cases were more prominent in female (54.88 %) and highest case number was found in worker group (29.02 %) followed by student (28.47 %) and officer (16.92 %). In this study, the age group 21-30 years old had the highest infection rate (42.23 %), followed by 10-20 years old (24.21 %). Most of dengue cases was primary infection (91.61 %). Dengue serotype 2 predominated in 2019 and 2020 and substitute by serotype 1 in 2021. Across the nine districts of Vientiane Capital, the highest incidence of dengue was found in Xaythany district population in 2019, shifting to Chanthabouly district in 2020 and 2021. The MaxEnt revealed potentially most suitable areas for dengue were widely distributed central south part of Vientiane, Laos. Additionally, the best predictive variable for dengue occurrence was normalized difference vegetation index. Understanding of case characteristics and spatial distribution features of dengue will be helpful in effective surveillance and disease control in the future., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024. Published by Elsevier B.V.)
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- 2024
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20. Toxic heavy metals in a landfill environment (Vientiane, Laos): Fish species and associated health risk assessment.
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Noudeng V, Pheakdey DV, and Xuan TD
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- Animals, Risk Assessment, Humans, Laos, Environmental Monitoring, Food Contamination analysis, Metals, Heavy analysis, Metals, Heavy toxicity, Water Pollutants, Chemical analysis, Water Pollutants, Chemical toxicity, Fishes, Waste Disposal Facilities
- Abstract
Leachates from municipal landfills introduce toxic heavy metals into water, causing bioaccumulation. This study assesses metal levels and potential human health risks associated with consuming Anabas testudineus and Channa striata. Inductively coupled plasma mass spectrometry detected Cd, Cu, Cr, Ni, Pb, and Zn in both fish species. Leachate metal concentrations meet international discharge standards, Cd, Cr, and Pb in the fish exceed the international accepted values. Gastrointestinal tract+liver samples show significant variation between species, particularly in Cd and Pb. EDI, THQ/HI, and TR for the both species fall below TDIs, lower than the limit of 1, and within the acceptable range of the US-EPA permissible limit, respectively. Fish consumption appears safe regarding carcinogenic risk, but exceeding metal limits could impact heavy metals accumulation in the local food chain. Raising public awareness is crucial, and governmental agencies and environmental organizations should enhance waste treatment technologies and enact relevant health legislation., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)
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- 2024
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21. Factors influencing maternal death in Cambodia, Laos, Myanmar, and Vietnam countries: A systematic review.
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Win PP, Hlaing T, and Win HH
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- Humans, Female, Myanmar epidemiology, Cambodia epidemiology, Laos epidemiology, Pregnancy, Vietnam epidemiology, Prenatal Care statistics & numerical data, Maternal Health Services statistics & numerical data, Maternal Mortality, Maternal Death statistics & numerical data
- Abstract
Background: A maternal mortality ratio is a sensitive indicator when comparing the overall maternal health between countries and its very high figure indicates the failure of maternal healthcare efforts. Cambodia, Laos, Myanmar, and Vietnam-CLMV countries are the low-income countries of the South-East Asia region where their maternal mortality ratios are disproportionately high. This systematic review aimed to summarize all possible factors influencing maternal mortality in CLMV countries., Methods: This systematic review applied "The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Checklist (2020)", Three key phrases: "Maternal Mortality and Health Outcome", "Maternal Healthcare Interventions" and "CLMV Countries" were used for the literature search. 75 full-text papers were systematically selected from three databases (PubMed, Google Scholar and Hinari). Two stages of data analysis were descriptive analysis of the general information of the included papers and qualitative analysis of key findings., Results: Poor family income, illiteracy, low education levels, living in poor households, and agricultural and unskilled manual job types of mothers contributed to insufficient antenatal care. Maternal factors like non-marital status and sex-associated work were highly associated with induced abortions while being rural women, ethnic minorities, poor maternal knowledge and attitudes, certain social and cultural beliefs and husbands' influences directly contributed to the limitations of maternal healthcare services. Maternal factors that made more contributions to poor maternal healthcare outcomes included lower quintiles of wealth index, maternal smoking and drinking behaviours, early and elderly age at marriage, over 35 years pregnancies, unfavourable birth history, gender-based violence experiences, multigravida and higher parity. Higher unmet needs and lower demands for maternal healthcare services occurred among women living far from healthcare facilities. Regarding the maternal healthcare workforce, the quality and number of healthcare providers, the development of healthcare infrastructures and human resource management policy appeared to be arguable. Concerning maternal healthcare service use, the provisions of mobile and outreach maternal healthcare services were inconvenient and limited., Conclusion: Low utilization rates were due to several supply-side constraints. The results will advance knowledge about maternal healthcare and mortality and provide a valuable summary to policymakers for developing policies and strategies promoting high-quality maternal healthcare., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Win et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2024
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22. Trust in healthcare: methodological and conceptual insights from mixed-method research in Lao People's Democratic Republic.
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Haenssgen MJ, Elliott EM, Phommachanh S, Phomkong S, Kounnavong S, and Kubota S
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- Humans, Laos, Female, Male, Adult, Middle Aged, Focus Groups, Young Adult, Rural Population, Adolescent, Southeast Asian People, Trust, Primary Health Care, Qualitative Research
- Abstract
Background: Global health foregrounds trust as a key requirement for the achievement of international health initiatives, but it remains an elusive concept that is often mobilised without consideration of its dimensions, drivers and downstream behavioural consequences. This paper aims to contribute to the conceptual development and measurement of 'patient trust in primary healthcare' from the lower middle-income country perspective of rural Lao PDR., Methods: A two-phase mixed-method research design was implemented between January 2021 and April 2023. Phase 1 involved exploratory qualitative research to understand the local expressions and dimensions of patient trust in primary healthcare, with 25 semistructured interviews and 17 focus group discussions (120 participants) in eight villages in Bokeo Province. Phase 2 involved explanatory research to assess patterns of trust systematically at scale in 14 villages across four provinces, wherein 26 cognitive interviews, 17 expert interviews and non-participant community observations informed a community census survey with 1838 participants. We analysed qualitative data through content-oriented thematic analysis and developed an 8-item trust scale on that basis. Quantitative data analysis used descriptive statistical and regression analysis., Results: We found that trust in primary healthcare is readily understood and intrinsically valuable in rural Lao PDR. Key dimensions included communication, respectful care, relationship, fairness, integrity, reputation, assurance of treatment and competence. The survey highlighted that reputation, competence, integrity and respectful care had the lowest trust scores. Health centre operations predicted the local expressions of trust. The behavioural consequences of trust were limited to a positive statistical association with antenatal care uptake among pregnant women but outweighed by alternative measures that also captured the availability of healthcare facilities., Conclusions: Overall, the development of our quantitative trust scale offers a process model for future researchers. We conclude that interpersonal, institutional and service-related trust require more explicit recognition in health system development and integration into health policy., Competing Interests: Competing interests: None declared., (© World Health Organization 2024. Licensee BMJ.)
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- 2024
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23. Sustaining essential health services in Lao PDR in the context of donor transition and COVID-19.
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Kim E, Park YL, Lo YR, Keoprasith B, and Panyakeo S
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- Adolescent, Child, Humans, Infant, Newborn, Budgets, Health Services, Laos, COVID-19 epidemiology, Southeast Asian People, Health Planning economics
- Abstract
Lao People's Democratic Republic (Lao PDR) aims at graduating from least developed country status by 2026 and must increase the level of domestic financing for health. This paper examines how the government has prepared for the decline of external assistance and how donors have applied their transition approaches. Adapting a World Health Organization (WHO) framework, reflections and lessons were generated based on literature review, informal and formal consultations and focus group discussions with the Lao PDR government and development partners including budget impact discussion. The government has taken three approaches to transition from external to domestic funding: mobilizing domestic resources, increasing efficiency across programs and prioritization with a focus on strengthening primary health care (PHC). The government has increased gradually domestic government health expenditures as a share of the government expenditure from 2.6% in 2013 to 4.9% in 2019. The Ministry of Health has made efforts to design and roll out integrated service delivery of maternal, newborn, child, and adolescent health services, immunization and nutrition; integrated 13 information systems of key health programs into one single District Health Information Software 2; and prioritized PHC, which has led to shifting donors towards supporting PHC. Donors have revisited their aid policies designed to improve sustainability and ownership of the government. However, the government faces challenges in improving cross-programmatic efficiency at the operational level and in further increasing the health budget due to the economic crisis aggravated during Coronavirus disease 2019 (COVID-19). Working to implement donor transition strategies under the current economic situation and country challenges, calls into question the criteria used to evaluate transition. This criterion needs to include more appropriate indicators other than gross national income per capita, which does not reflect a country's readiness and capacity of the health system. There should be a more country-tailored strategy and support for considering the context and system-wide readiness during donor transition., (© World Health Organization, 2024. All rights reserved. The World Health Organization has granted the Publisher permission for the reproduction of this article.)
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- 2024
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24. Quality of routine health data at the onset of the COVID-19 pandemic in Ethiopia, Haiti, Laos, Nepal, and South Africa.
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Ayele W, Gage A, Kapoor NR, Kassahun Gelaw S, Hensman D, Derseh Mebratie A, Nega A, Asai D, Molla G, Mehata S, Mthethwa L, Mfeka-Nkabinde NG, Joseph JP, Pierre DM, Thermidor R, and Arsenault C
- Subjects
- Pregnancy, Humans, Female, Pandemics, Laos epidemiology, Nepal epidemiology, Ethiopia, South Africa epidemiology, Haiti epidemiology, Cesarean Section, COVID-19 epidemiology
- Abstract
Background: During the COVID-19 pandemic, governments and researchers have used routine health data to estimate potential declines in the delivery and uptake of essential health services. This research relies on the data being high quality and, crucially, on the data quality not changing because of the pandemic. In this paper, we investigated those assumptions and assessed data quality before and during COVID-19., Methods: We obtained routine health data from the DHIS2 platforms in Ethiopia, Haiti, Lao People's Democratic Republic, Nepal, and South Africa (KwaZulu-Natal province) for a range of 40 indicators on essential health services and institutional deaths. We extracted data over 24 months (January 2019-December 2020) including pre-pandemic data and the first 9 months of the pandemic. We assessed four dimensions of data quality: reporting completeness, presence of outliers, internal consistency, and external consistency., Results: We found high reporting completeness across countries and services and few declines in reporting at the onset of the pandemic. Positive outliers represented fewer than 1% of facility-month observations across services. Assessment of internal consistency across vaccine indicators found similar reporting of vaccines in all countries. Comparing cesarean section rates in the HMIS to those from population-representative surveys, we found high external consistency in all countries analyzed., Conclusions: While efforts remain to improve the quality of these data, our results show that several indicators in the HMIS can be reliably used to monitor service provision over time in these five countries., (© 2023. The Author(s).)
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- 2023
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25. Determinants of oxidative stress among indigenous populations in Northern Laos: Trace element exposures and dietary patterns.
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Mizuno Y, Inaba Y, Masuoka H, Kibe M, Kosaka S, Natsuhara K, Hirayama K, Inthavong N, Kounnavong S, Tomita S, and Umezaki M
- Subjects
- Adult, Humans, Environmental Exposure analysis, Cadmium analysis, Cross-Sectional Studies, Laos, 8-Hydroxy-2'-Deoxyguanosine analysis, Oxidative Stress, Biomarkers metabolism, Indigenous Peoples, Lipids, Trace Elements analysis, Arsenic analysis, Selenium analysis
- Abstract
Objectives: To investigate determinants of oxidative stress in an indigenous population, we examined associations of trace element exposures and dietary patterns with three oxidative stress-related biomarkers among indigenous populations in Northern Laos., Methods: This cross-sectional study included 341 adults from three villages with different levels of modernization. We used three oxidative stress-related biomarkers: urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG) and 8-isoprostane concentrations, which were measured using liquid chromatography-tandem mass spectrometry, and blood telomere lengths, which were measured using a quantitative polymerase chain reaction method. We used multilevel analysis to examine associations of urinary arsenic, cadmium, and selenium concentrations, their interaction terms, and wild-plant-food scores (principal component scores calculated from food consumption frequencies) with oxidative stress-related biomarkers., Results: Urinary arsenic and cadmium concentrations were positively associated with urinary 8-isoprostane concentrations. Urinary selenium concentrations were positively associated with urinary 8-OHdG concentrations. Interaction terms ([arsenic or cadmium] × selenium) showed negative associations with urinary 8-OHdG and 8-isoprostane concentrations, respectively. Urinary cadmium concentrations were negatively associated with telomere lengths. Wild-plant-food scores did not exhibit associations with oxidative stress-related biomarkers., Conclusion: Our findings imply that exposure to arsenic and cadmium is associated with greater oxidative lipid damage, whereas selenium may attenuate arsenic-induced oxidative DNA damage and cadmium-induced oxidative lipid damage. Cadmium exposure may accelerate telomere attrition. Trace element exposure may be a determinant of oxidative stress among indigenous populations in Northern Laos., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier B.V. All rights reserved.)
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- 2023
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26. The clinical characteristics, etiologic pathogens and the risk factors associated with dehydration status among under-five children hospitalized with acute diarrhea in Savannakhet Province, Lao PDR.
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Vorlasane L, Luu MN, Tiwari R, Imoto A, Sato M, Huy NT, Kamiya Y, and Moji K
- Subjects
- Humans, Child, Animals, Dehydration complications, Dehydration epidemiology, Laos epidemiology, Retrospective Studies, Risk Factors, Diarrhea complications, Diarrhea epidemiology, Rotavirus, Mustelidae
- Abstract
Background: Acute diarrhea is a common health problem in children, especially those under five years of age (U5). The mortality rate due to acute diarrhea among U5 children accounted for 11% in Lao PDR in 2016. No study has been done to investigate the etiologic pathogens of acute diarrhea and the risk factors associated with dehydration status among U5 children hospitalized with acute diarrhea in this region., Objectives: The study aimed to evaluate the clinical characteristics, etiological agents and associated factors of dehydration status of acute diarrhea among hospitalized U5 children in Savannakhet Province, Lao PDR., Methods: This retrospective study reviewed paper-based medical records with available stool examination results of 33 U5 children hospitalized with acute diarrhea in Savannakhet Provincial Hospital, Lao PDR between Jan. 2018 and Dec. 2019. Descriptive statistics were used to describe clinical characteristics and etiologic agents of acute diarrhea of the children. Nonparametric test, Pearson's Chi-square test and Fisher exact test were used to determine the risk factors associated with level of dehydration of the participants., Results: Vomiting was the most common symptom (66.6%), followed by fever (60.6%). Dehydration was found in 48.4% of subjects. Rotavirus was the most common identified pathogen with a prevalence of 55.5%. Bacterial enteric infection was identified in 15.1% of patients. There is a significantly higher prevalence of dehydration among children with acute diarrhea caused by rotavirus compared to those with negative rotavirus testing (70.0% vs. 12.5%, p = 0.02)., Conclusions: Rotavirus was the most prevalent pathogen of acute diarrhea among U5 children. Pediatric patients with acute diarrhea caused by rotavirus had a higher prevalence of dehydration compared to those with negative rotavirus testing., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2023 Vorlasane et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2023
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27. Fe 12 LaO 19 fabricated biochar for removal of phosphorus in water and exploration of its adsorption mechanism.
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Akindolie MS and Choi HJ
- Subjects
- Water, Adsorption, Laos, Kinetics, Charcoal chemistry, Phosphorus, Water Pollutants, Chemical chemistry
- Abstract
Phosphorus (P) runoff from untreated wastewater and agricultural runoff has become an issue of concern because excessive P is detrimental to the health of water bodies and aquatic organisms such as fishes. Hence, different methods are being developed to salvage this challenge. However, most of the methods are expensive, while some are unsustainable. In this study, a simple method was employed in fabricating an absorbent through the co-precipitation of iron and lanthanum on the matrix of biochar prepared from the spent coffee ground for P uptake. The adsorbent named Fe
12 LaO19 @BC was able to attain equilibrium fast within 60 min when used to adsorb P with 98% P removal within the first 30 min Fe12 LaO19 @BC also maintained high P adsorption across a pH range of 3-7. In the presence of other anions (SO4 2- , CO3 2- , NO3 - , Cl- , HCO3 - ) in the solution, Fe12 LaO19 @BC enabled 71.5-97.8% uptake of P. 81.58 mg P/g maximum adsorption capacity at was reached at 40 °C. The reusability test reveals that about 60% of P uptake was maintained after five adsorption cycles with almost an undisturbed desorption efficiency. The negative value of ΔG°, as shown by the thermodynamic analysis, indicates a favorable and spontaneous reaction during P removal by Fe12 LaO19 @BC. The XRD analysis showed a major peak corresponding to Fe12 LaO19, which is believed to have facilitated the adsorption of P. The adsorption was controlled by multiple mechanisms. An overview of the study indicates Fe12 LaO19 @BC as a promising adsorbent for the removal of P in the water., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier Ltd. All rights reserved.)- Published
- 2023
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28. Integrated assessment of climate change and reservoir operation on flow-regime and fisheries of the Sekong river basin in Lao PDR and Cambodia.
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Ghimire S, Shrestha S, Hok P, Heng S, Nittivattanaon V, and Sabo J
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- Animals, Cambodia, Fisheries, Laos, Fishes, Rivers, Climate Change
- Abstract
This study assesses the cumulative impact of climate change and reservoir operation on flow regime and fisheries in the Sekong River Basin. Ensemble of five selected Regional Climate Models (RCMs) were used to project the future climate under RCP4.5 and RCP8.5 scenarios. The projected future climate was used to simulate the future hydrology using the SWAT model while HEC-ResSim was utilized for reservoir simulation. Finally fish-flow relationship was developed to estimate the fish catch and productivity in future. Upon investigation we found that, Sekong River Basin is likely grow warmer and drier in future under climate change. The basin is expected to face 1.3-3.6 °C rise in mean annual temperature and receive 0-6% less annual rainfall in future. The wet season in the basin is anticipated to be drier (0% to -6%) while the dry season rainfall shows no particular trend (-3%-10%). Such a change in climate is likely to alter the mean annual flow in future between -3 and 5% at Attapeu, -6 to 2% at Ban Veunkhane, Lao PDR, and -7 to 1% at Siempang, Cambodia (basin outlet). Under climate change, we expect decrement in minimum flow but increment in the maximum flow while opposite is anticipated under reservoir operation. Operation of Xekaman 1 and Sekong 4A are likely to increase the minimum flow at river outlet by 32-59% and 13-18% respectively whereas maximum flow is expected to decrease by 28-5%. In addition, climate change is likely to have crucial impact on fisheries with up to 19% and 12% reduction in fish catches and fish productivity respectively. However, reservoirs tend to have negligible impact on fisheries., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier Inc. All rights reserved.)
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- 2023
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29. Reporting system on mortality statistics in Lao People's Democratic Republic.
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Inthaphatha S, Louangpradith V, Phoummalaysith B, Thanavanh B, Kariya T, Yamamoto E, and Hamajima N
- Subjects
- Humans, Health Facilities, Laos epidemiology, Public Reporting of Healthcare Data, Death Certificates, Mortality
- Abstract
The system to collect information on mortality statistics in Lao PDR is not well established, accurate and timely death information is therefore not available. This article reports the system and process to make the mortality statistical data of Lao PDR. The country has a paper-based resident registration system, using a death notification document, a death certificate, and a family census book. The death notification document is important as it provides the cause of death, which is issued from a health facility and the village office. In the event of a death occurring at home, the family representative needs to report to the village office verbally to obtain a death notification document. On the other hand, if the death occurred in a medical facility, a death notification document from a health facility is provided. The family representative should bring the death notification document to the district Home Affairs office to register the death and obtain a death certificate. After that, the family representative needs to bring the death certificate to the district Public Security office for an amendment in the family census book. ICD-10 is under development regarding death notification from health facilities under the Ministry of Health. However, it is unclear how death notification from village offices can adopt ICD-10 as the majority of deaths occur outside health facilities. A comprehensive and integrated mortality reporting system is necessary in order to create a holistic health policy and welfare for the country., Competing Interests: The authors declare that there is no conflict of interest regarding the publication of this study.
- Published
- 2023
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30. Prevalence of hepatitis B and C virus infections in Lao People's Democratic Republic: The first national population-based cross-sectional survey.
- Author
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Miyano S, Pathammavong C, Ichimura Y, Sugiyama M, Phounphenghack K, Tengbriacheu C, Khamphaphongphane B, Nouanthong P, Franzel L, Yang TU, Raaijimakers H, Ota T, Funato M, Komada K, and Hachiya M
- Subjects
- Humans, Male, Young Adult, Adult, Cross-Sectional Studies, Hepatitis B Surface Antigens, Laos epidemiology, Prevalence, Seroepidemiologic Studies, Hepatitis C Antibodies, Hepatitis B virus, Hepatitis B, Chronic epidemiology, Hepatitis B, Hepatitis C epidemiology
- Abstract
Population-based seroprevalence of chronic hepatitis B and C infections has not been examined in Lao People's Democratic Republic (PDR). Therefore, this study aimed to estimate the seroprevalence of these infections in the general population of Lao PDR and perform subgroup analysis. A nationwide seroprevalence survey was conducted in Lao PDR in June 2019 using the multistage cluster sampling method. Dried blood spot samples were collected onto WhatmanTM 903 filter paper by finger prick. A chemiluminescent microparticle immunoassay was used to measure the levels of hepatitis B surface antigen (HBsAg) and hepatitis C antibody (HCV-Ab). Samples in which the HBsAg level was above 0.05 IU/ml and HCV-Ab was above the signal/cutoff ratio of 1.0 were considered positive based on comparisons with the relative light unit value of a calibration sample. A total of 1,927 samples (male: 47.3%, mean age: 23.0 years) were included in the analysis. The prevalence was estimated to be 4.2% (95% confidence interval [CI]: 2.7-6.3) for HBsAg and 1.6% (95% CI: 0.5-5.3) for HCV-Ab. Multivariable analysis revealed that those aged 20-24 years (adjusted odds ratio (AOR): 2.3, 95% CI: 1.1-4.6), those aged 25-29 years (AOR: 2.7, 95% CI: 1.3-5.6), those from the Northern region (AOR: 2.8, 95% CI: 1.2-6.6), and those who were Khmu (AOR: 3.6, 95% CI: 2.0-6.8) or Hmong (AOR: 5.0, 95% CI: 3.3-7.5) were significantly more likely to be positive for HBsAg. Although there were no statistically significant differences in the HCV-Ab prevalence according to each variable, males (2.9%, 95% CI: 0.7-10.7), those aged ≥40 years (6.1%, 95% CI: 2.1-16.8), and those from the Southern region (3.3%, 95% CI: 0.6-15.3) tended to have a higher prevalence. This novel population-based survey found differences in the prevalence of chronic hepatitis B and hepatitis C virus infections in Lao PDR according to sex, age group, region, and ethnicity; however, the results of this study should be confirmed in future studies, and relevant responses tailored for each target also need to be determined to control the transmission of hepatitis B and C infections., Competing Interests: The authors declare that they have no conflict of interest., (Copyright: © 2022 Miyano et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2022
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31. Cost-effectiveness analysis of G6PD diagnostic test for Plasmodium vivax radical cure in Lao PDR: An economic modelling study.
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Aung YN, Tun STT, Vanisaveth V, Chindavongsa K, and Kanya L
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- Cost-Benefit Analysis, Diagnostic Tests, Routine, Female, Hemolysis, Humans, Laos epidemiology, Male, Plasmodium vivax, Primaquine therapeutic use, Antimalarials therapeutic use, Glucosephosphate Dehydrogenase Deficiency diagnosis, Glucosephosphate Dehydrogenase Deficiency epidemiology, Malaria diagnosis, Malaria drug therapy, Malaria epidemiology, Malaria, Vivax diagnosis, Malaria, Vivax drug therapy, Malaria, Vivax epidemiology
- Abstract
Background: Plasmodium vivax (Pv) infections were 68% of the total malaria burden in Laos in 2019. The parasite causes frequent relapses, which can be prevented by primaquine (PMQ). Testing for glucose-6-phosphate-dehydrogenase (G6PD) deficiency is recommended before giving PMQ to avoid haemolysis. Because of the risk of haemolysis in G6PD intermediate deficiencies among females, Laos uses the PMQ 14-days regimen only in G6PD normal females. Among G6PD point-of-care tests, qualitative tests cannot differentiate between G6PD normal and intermediate females. Quantitative tests are required to differentiate between G6PD normal and intermediate deficiencies. However, the quantitative test lacks the cost-effectiveness evidence necessary for decision-making for large-scale adoption. This study examined the cost-effectiveness of quantitative G6PD test, with either supervised PMQ treatment or unsupervised PMQ treatment, against the usual unsupervised PMQ 8-weeks strategy. Supervised PMQ 8-weeks strategy without G6PD testing was also compared against the unsupervised PMQ 8-weeks strategy since the former had recently been adopted in malaria high burden villages that had village malaria volunteers. A budget impact analysis was conducted to understand the incremental cost and effect needed for a nationwide scale-up of the chosen strategy., Methods: A decision tree model compared the cost-effectiveness of implementing four strategies at one health facility with an average of 14 Pv cases in one year. The strategies were unsupervised PMQ strategy, supervised PMQ strategy, G6PD test with unsupervised PMQ strategy, and G6PD test with supervised PMQ strategy. Disability Adjusted Life Years (DALYs) was the effect measure. Costs were calculated from a payer perspective, and sensitivity analyses were conducted. One Gross Domestic Product (GDP) per capita of Laos was set as the cost-effectiveness threshold. Budget impact analysis was conducted using the health facility wise Pv data in Laos in 2020., Findings: Supervised PMQ strategy was extendedly dominated by G6PD test strategies. When compared against the unsupervised PMQ strategy, both G6PD test strategies were more costly but more effective. Their Incremental Cost-Effectiveness Ratios (ICER) were 96.72US$ for the G6PD test with unsupervised PMQ strategy and 184.86US$ for the G6PD test with supervised PMQ strategy. Both ICERs were lower than one GDP per capita in Laos. Following the sensitivity analysis, low adherence for PMQ 14 days made both G6PD test strategies less cost-effective. The lower the Pv case number reported in a health facility, the higher the ICER was. In the budget impact analysis, the expected budget need was only half a million US$ when the G6PD test rollout was discriminately done depending on the Pv case number reported at the health facilities. Indiscriminate roll out of G6PD test to all health facilities was most expensive with least effect impact., Competing Interests: At the time of manuscript writing, Yu Nandar Aung was an employee of the United Nations Office for Project Management (UNOPS), which is a grant management agency for the Global Fund’s Regional Artemisininresistance Initiative grant that supports the national malaria program in Lao PDR. Yu Nandar Aung was also a post-graduate student at the London School of Economics at the time of this manuscript writing and is responsible for the views presented in this paper which do not represent those of the agency that employs her. Any affiliation with any of the authors does not alter our adherence to PLOS ONE policies on sharing data and materials.
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- 2022
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32. Cost-effectiveness of seasonal influenza vaccination in pregnant women, healthcare workers and adults >= 60 years of age in Lao People's Democratic Republic.
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Ortega-Sanchez IR, Mott JA, Kittikraisak W, Khanthamaly V, McCarron M, Keokhonenang S, Ounaphom P, Pathammavong C, Phounphenghack K, Sayamoungkhoun P, Chanthavilay P, Bresee J, and Tengbriacheu C
- Subjects
- Adult, Cost-Benefit Analysis, Female, Health Personnel, Humans, Laos epidemiology, Pregnancy, Pregnant Women, Quality-Adjusted Life Years, Seasons, Vaccination, Vaccine Efficacy, Influenza Vaccines, Influenza, Human prevention & control
- Abstract
Background: Pregnant women, healthcare workers (HW), and adults >= 60 years have shown an increased vulnerability to seasonal influenza virus infections and/or complications. In 2012, the Lao People's Democratic Republic (Lao PDR) initiated a national influenza vaccination program for these target groups. A cost-effectiveness evaluation of this program was undertaken to inform program sustainability., Methods: We designed a decision-analytical model and collected influenza-related medical resource utilization and cost data, including indirect costs. Model inputs were obtained from medical record abstraction, interviews of patients and staff at hospitals in the national influenza sentinel surveillance system and/or from literature reviews. We compared the annual disease and economic impact of influenza illnesses in each of the target groups in Lao PDR under scenarios of no vaccination and vaccination, and then estimated the cost-effectiveness of the vaccination program. We performed sensitivity analyses to identify influential variables., Results: Overall, the vaccination of pregnant women, HWs, and adults >= 60 years could annually save 11,474 doctor visits, 1,961 days of hospitalizations, 43,027 days of work, and 1,416 life-years due to laboratory-confirmed influenza illness. After comparing the total vaccination program costs of 23.4 billion Kip, to the 18.4 billion Kip saved through vaccination, we estimated the vaccination program to incur a net cost of five billion Kip (599,391 USD) annually. The incremental cost per life-year saved (ICER) was 44 million Kip (5,295 USD) and 6.9 million Kip (825 USD) for pregnant women and adults >= 60 years, respectively. However, vaccinating HWs provided societal cost-savings, returning 2.88 Kip for every single Kip invested. Influenza vaccine effectiveness, attack rate and illness duration were the most influential variables to the model., Conclusion: Providing influenza vaccination to HWs in Lao PDR is cost-saving while vaccinating pregnant women and adults >= 60 is cost-effective and highly cost-effective, respectively, per WHO standards., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Published by Elsevier Ltd.)
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- 2021
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33. Environmental justice and REDD+ safeguards in Laos: Lessons from an authoritarian political regime.
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Ramcilovic-Suominen S, Carodenuto S, McDermott C, and Hiedanpää J
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- Forests, Humans, Laos, Minority Groups, Conservation of Natural Resources, Ethnicity
- Abstract
Balancing agendas for climate mitigation and environmental justice continues to be one of the key challenges in climate change governance mechanisms, such as Reducing Emissions from Deforestation and Degradation (REDD+). In this paper we apply the three-dimensional environmental justice framework as a lens to examine the REDD+ process in the Lao People's Democratic Republic (Laos) and the REDD+ social safeguards. We focus particularly on challenges to justice faced by marginalized communities living in forest frontier areas under an authoritarian regime. Drawing on policy analysis and open-ended interviews across different policy levels, we explore procedural, distributional, and recognitional justice across the REDD+ policy levels in Laos. We find that REDD+ social safeguards have been applied by both donors and state actors in ways that facilitate external control. We underscore how authoritarian regime control over civil society and ethnic minority groups thwarts justice. We also highlight how this political culture and lack of inclusiveness are used by donors and project managers to implement their projects with little political debate. Further obstacles to justice relate to limitations inherent in the REDD+ instrument, including tight schedules for dealing with highly sensitive socio-political issues under social safeguards. These findings echo other research but go further in questioning the adequacy of safeguards to promote justice under a nationally driven REDD+. We highlight the importance of recognition and political context, including aspects such as power relations, self-determination and self-governance of traditional or customary structures, in shaping justice outcomes., (© 2021. The Author(s).)
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- 2021
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34. WHO Systematic Assessment of Rehabilitation Situation (STARS): Results of the Field Testing in Jordan, Myanmar, Sri Lanka, Solomon Islands, Laos, Haiti, and Guyana.
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Kleinitz P, Sabariego C, and Cieza A
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- Guyana, Haiti, Humans, Jordan, Laos, Melanesia, Myanmar, Sri Lanka, World Health Organization
- Abstract
The WHO Systematic Assessment of Rehabilitation Situation (STARS) tool was developed by WHO to facilitate effective prioritization and strategic planning for rehabilitation in countries. The objective of this paper is to present the results of the fourth phase of its development, its field testing in seven countries focusing on its completeness, usefulness, accessibility and feasibility. Field testing occurred in Jordan, Myanmar, Sri Lanka, Solomon Islands, Laos, Haiti, and Guyana. Evaluation occurred through structured interviews and rating exercises with 17 government representatives, international consultants, WHO country or regional office staff and rehabilitation experts who were actively engaged and familiar with the STARS assessment and who were knowledgeable of the rehabilitation situation in the countries. STARS was appraised as relevant, complete and accurate in describing the country situation. Areas of inaccuracy were mostly linked to challenges in describing areas of services similarly when significant diversity existed. Feasibility and accessibility were mostly confirmed and more complex components of the tool as well as the guidance to the assessment process were slightly revised in light of the field-testing results. The field testing of WHO STARS confirmed its completeness, usefulness, accessibility and feasibility, and concerns raised by the interviews informed the last refinement of the tool. STARS is part of the WHO Rehabilitation in Health Systems-Guide for Action, available online, by September 2021, STARS had guided 21 country situation assessments.
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- 2021
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35. Development of a Digital Case Management Tool for Community Based Inclusive Development Program.
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Marella M, Koolmees D, Vongvilay C, Frank B, Pryor W, and Smith F
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- Disability Evaluation, Humans, Laos, Case Management, Disabled Persons
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Disability inclusive development practices require reliable data to identify people with disabilities, their barriers to participation and support needs. Although several tools are available for measuring different components of disability, it is often difficult for program teams in low resource settings, including lay community workers of community based inclusive development (CBID) programs, to collect and analyze data for program monitoring and evaluation. This paper presents the development of a digital CBID Modular Tool with automated data analysis to support routine case management processes and monitoring of a CBID program in Laos PDR. The tool was developed in different phases involving stakeholder consultations, auditing of existing tools, content development for the different modules for disability assessment and support needs, software development and testing. The tool was developed in a participatory process including people with disabilities. The tool measures needs and support requirements of people with disabilities in health, functioning, economic, education and caregiver support domains, and enables intervention planning. The content included is both context specific and universal as derived from the widely used validated tools. This unique digital CBID Modular Tool can support data collection by lay community workers and support reliable data collection to measure disability inclusion in a development program.
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- 2021
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36. Implementation of field detection devices for antimalarial quality screening in Lao PDR-A cost-effectiveness analysis.
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Luangasanatip N, Khonputsa P, Caillet C, Vickers S, Zambrzycki S, Fernández FM, Newton PN, and Lubell Y
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- Antimalarials economics, Chemistry Techniques, Analytical economics, Community Pharmacy Services, Cost-Benefit Analysis, Counterfeit Drugs economics, Humans, Laos epidemiology, Malaria drug therapy, Malaria economics, Malaria epidemiology, Product Surveillance, Postmarketing, Substandard Drugs economics, Antimalarials chemistry, Chemistry Techniques, Analytical instrumentation, Chemistry Techniques, Analytical methods, Counterfeit Drugs analysis, Substandard Drugs analysis
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Substandard and falsified (SF) antimalarials have devastating consequences including increased morbidity, mortality and economic losses. Portable medicine quality screening devices are increasingly available, but whether their use for the detection of SF antimalarials is cost-effective is not known. We evaluated the cost-effectiveness of introducing such devices in post-market surveillance in pharmacies in Laos, conservatively focusing on their outcome in detecting SF artemisinin-based combination therapies (ACTs). We simulated the deployment of six portable screening devices: two handheld near-infrared [MicroPHAZIR RX, NIR-S-G1], two handheld Raman [Progeny, TruScan RM]; one portable mid-infrared [4500a FTIR] spectrometers, and single-use disposable paper analytical devices [PADs]. We considered two scenarios with high and low levels of SF ACTs. Different sampling strategies in which medicine inspectors would test 1, 2, or 3 sample(s) of each brand of ACT were evaluated. Costs of inspection including device procurement, inspector time, reagents, reference testing, and replacement with genuine ACTs were estimated. Outcomes were measured as disability adjusted life years (DALYs) and incremental cost-effectiveness ratios were estimated for each device compared with a baseline of visual inspections alone. In the scenario with high levels of SF ACTs, all devices were cost-effective with a 1-sample strategy. In the scenario of low levels of SF ACTs, only four devices (MicroPHAZIR RX, 4500a FTIR, NIR-S-G1, and PADs) were cost-effective with a 1-sample strategy. In the multi-way comparative analysis, in both scenarios the NIR-S-G1 testing 2 samples was the most cost-effective option. Routine inspection of ACT quality using portable screening devices is likely to be cost-effective in the Laos context. This work should encourage policy-makers or regulators to further investigate investment in portable screening devices to detect SF medicines and reduce their associated undesired health and economic burdens., Competing Interests: The authors have declared that no competing interests exist.
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- 2021
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37. A comparative field evaluation of six medicine quality screening devices in Laos.
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Caillet C, Vickers S, Zambrzycki S, Fernández FM, Vidhamaly V, Boutsamay K, Boupha P, Peerawaranun P, Mukaka M, and Newton PN
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- Chemistry Techniques, Analytical methods, Humans, Laos epidemiology, Pilot Projects, Pilots, Sensitivity and Specificity, Anti-Infective Agents chemistry, Chemistry Techniques, Analytical instrumentation, Counterfeit Drugs analysis, Substandard Drugs analysis
- Abstract
Background: Medicine quality screening devices hold great promise for post-market surveillance (PMS). However, there is little independent evidence on their field utility and usability to inform policy decisions. This pilot study in the Lao PDR tested six devices' utility and usability in detecting substandard and falsified (SF) medicines., Methodology/principal Findings: Observational time and motion studies of the inspections by 16 Lao medicine inspectors of 1) the stock of an Evaluation Pharmacy (EP), constructed to resemble a Lao pharmacy, and 2) a sample set of medicines (SSM); were conducted without and with six devices: four handheld spectrometers (two near infrared: MicroPHAZIR RX, NIR-S-G1 & two Raman: Progeny, Truscan RM); one portable mid-infrared spectrometer (4500a), and single-use paper analytical devices (PAD). User experiences were documented by interviews and focus group discussions. Significantly more samples were wrongly categorised as pass/fail with the PAD compared to the other devices in EP inspections (p<0.05). The numbers of samples wrongly classified in EP inspections were significantly lower than in initial visual inspections without devices for 3/6 devices (NIR-S-G1, MicroPHAZIR RX, 4500a). The NIR-S-G1 had the fastest testing time per sample (median 93.5 sec, p<0.001). The time spent on EP visual inspection was significantly shorter when using a device than for inspections without devices, except with the 4500a, risking missing visual clues of samples being SF. The main user errors were the selection of wrong spectrometer reference libraries and wrong user interpretation of PAD results. Limitations included repeated inspections of the EP by the same inspectors with different devices and the small sample size of SF medicines., Conclusions/significance: This pilot study suggests policy makers wishing to implement portable screening devices in PMS should be aware that overconfidence in devices may cause harm by reducing inspectors' investment in visual inspection. It also provides insight into the advantages/limitations of diverse screening devices in the hands of end-users., Competing Interests: The authors have declared that no competing interests exist.
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- 2021
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38. In search of the last malaria cases: ethnographic methods for community and private-sector engagement in malaria elimination in Vietnam, Laos, and Cambodia.
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Masunaga Y, Muela Ribera J, Nguyen TT, Tesfazghi K, and Peeters Grietens K
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- Cambodia epidemiology, Humans, Laos epidemiology, Vietnam epidemiology, Anthropology, Cultural methods, Community Participation statistics & numerical data, Malaria epidemiology, Private Sector statistics & numerical data
- Abstract
Background: Despite significant strides made in reducing malaria morbidity and mortality in the Greater Mekong Subregion, malaria transmission continues amongst the most 'hard-to-reach', such as forest-goers and mobile and migrant populations, who face access obstacles to malaria diagnosis and treatment. As such, regional malaria elimination strategies endeavour to incorporate the private sector and local communities in improving surveillance and detection of the last malaria cases in remote forested areas. The question remains, however, whether such strategies can reach these hard-to-reach populations and effectively reduce their disproportionate burden of malaria. This paper evaluates the strategy of community and private sector engagement in a malaria elimination project in Vietnam, Laos, and Cambodia., Methods: Ethnographic research, incorporating in-depth interviews, participant observations with informal discussions, and group discussions were conducted in Bu Gia Map commune, Binh Phuc province of Vietnam; in Phouvong district, Attapeu province of Laos; and, in nine newly established and informal communities in the provinces of Mondul Kiri, Steung Treng, Kratie, Kampong Thom, and Prah Vihear of Cambodia., Results: Different types of factors limited or enhanced the effectiveness of the participatory approaches in the different settings. In Vietnam, inter-ethnic tensions and sensitivity around forest-work negatively affected local population's health-seeking behaviour and consequent uptake of malaria testing and treatment. In Laos, the location of the project collaborative pharmacies in the district-centre were a mismatch for reaching hard-to-reach populations in remote villages. In Cambodia, the strategy of recruiting community malaria-workers, elected by the community members, did manage to reach the remote forested areas where people visited or stayed., Conclusions: 'Hard-to-reach' populations remain hard to reach without proper research identifying the socio-economic-political environment and the key dynamics determining uptake in involved communities and populations. Solid implementation research with a strong ethnographic component is required to tailor malaria elimination strategies to local contexts., (© 2021. The Author(s).)
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- 2021
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39. Urban-Rural Gaps in Breastfeeding Practices: Evidence From Lao People's Democratic Republic.
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Wallenborn JT, Valera CB, Kounnavong S, Sayasone S, Odermatt P, and Fink G
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- Adult, Female, Humans, Infant, Infant, Newborn, Laos, Male, Surveys and Questionnaires, Breast Feeding statistics & numerical data, Mothers statistics & numerical data, Rural Population statistics & numerical data, Urban Population statistics & numerical data
- Abstract
Objectives: Breastfeeding rates are decreasing rapidly in many low and middle-income countries, disproportionately affecting urban residences. We use data from Lao People's Democratic Republic to identify primary mechanisms underlying the urban-rural gap in breastfeeding practices. Methods: We used data from the 2017 Lao Social Indicator Survey II. Residence was categorized as large-urban (>1 million), small-urban (<1 Million), and rural. Multivariable logistic regression provided odds ratios and 95% confidence intervals (CI) to identify factors attributing to the urban-rural differences in complying with World Health Organization's breastfeeding recommendations for children <24 months. Results: Mothers in large-urban residences had 3.78 (95% confidence intervals: 1.19, 11.95) and 4.67 (95% CI: 2.30, 9.46) higher odds of non-compliance with exclusive and complementary breastfeeding recommendations, respectively, than mothers living in rural areas in bivariate models. Breastfeeding differentials between small urban and rural residences were largely explained by differences in maternal education and household wealth. Conclusion: Results of our paper suggest large disparities in breastfeeding practices between large-urban, small-urban, and rural residences., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Wallenborn, Valera, Kounnavong, Sayasone, Odermatt and Fink.)
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- 2021
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40. Two new species and a new record of the genus Meganola Dyar, 1898 (Lepidoptera, Nolidae, Nolinae) from Laos.
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Cha YB, Lszl GM, Bayarsaikhan U, Ko JH, Lee TG, Jang CM, Kim H, Kim JN, and Bae YS
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- Animals, Genitalia, Laos, Moths
- Abstract
The paper contains the description of two new Meganola Dyar, 1898 species (M. canaliculata Cha Bae, sp. n. and M. phuana Cha Bae, sp. n.) and a new record of M. tetrodon (de Joannis, 1928) from Laos. Color figures of adults and genitalia of the examined species are provided.
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- 2021
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41. Introducing Ecohealth education in a Teacher Training Institute in Lao PDR: a case study.
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Tomokawa S, Asakura T, Keosada N, Bouasangthong V, Souvanhxay V, Navamal P, Kanyasan K, Miyake K, Kokudo S, Watanabe R, Soukhavong S, Thalangsy K, and Moji K
- Subjects
- Educational Status, Health Education, Humans, Laos, Teacher Training
- Abstract
This paper argues the effectiveness of Ecohealth education for improving the quality of health and environmental education and for achieving sustainable development in developing countries. To illustrate the need for Ecohealth education, we review the transitions in health education, environmental education and Education for Sustainable Development (ESD) in various developing countries. Moreover, we discuss issues relating to these disciplines and consider the possible roles that Ecohealth education can play. Then, drawing on a case study conducted in Lao PDR, we propose a concrete example of the teaching content of Ecohealth education. We conclude that Ecohealth education can embody the concepts of ESD with respect to health and environmental issues, and thus can contribute to improvements in the quality of health and environmental education, and of ESD. In addition, we propose the following five actions for implementing Ecohealth education in developing countries: (i) promote research based on the approaches of public health and anthropology, and develop teaching materials that use the research results, (ii) empower school-aged children, (iii) encourage the active involvement and sharing of problems among communities, (iv) strengthen participatory teaching and learning methodology and (v) build a training system and train relevant teachers., (© The Author(s) 2020. Published by Oxford University Press. All rights reserved. For permissions, please email: journals.permissions@oup.com.)
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- 2021
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42. Factors associated with postpartum depression among women in Vientiane Capital, Lao People's Democratic Republic: A cross-sectional study.
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Inthaphatha S, Yamamoto E, Louangpradith V, Takahashi Y, Phengsavanh A, Kariya T, Saw YM, and Hamajima N
- Subjects
- Adolescent, Adult, Cross-Sectional Studies, Depression, Postpartum epidemiology, Depression, Postpartum pathology, Educational Status, Female, Humans, Laos epidemiology, Logistic Models, Odds Ratio, Personal Satisfaction, Postpartum Period, Pregnancy, Prevalence, Psychiatric Status Rating Scales, Risk Factors, Social Support, Surveys and Questionnaires, Young Adult, Depression, Postpartum psychology
- Abstract
Postpartum depression is a worldwide public health concern. The prevalence of postpartum depression is reported to be greater in developing countries than in developed countries. However, to the best of our knowledge, no papers on postpartum depression in the Lao People's Democratic Republic have been published. In order to strengthen maternal and child health, the current situation of postpartum depression should be understood. This study aims to determine the prevalence of postpartum depression and identify factors associated with postpartum depression in Vientiane Capital, Lao People's Democratic Republic. Study participants were 428 women 6-8 weeks postpartum who visited four central hospitals in Vientiane Capital for postnatal care from July to August 2019. Structured questionnaires were used to collect socio-demographic, obstetrical and infant, and psychiatric data about the women and their partners. The Edinburgh Postnatal Depression Scale (EPDS) was used to identify suspected cases of postpartum depression with the cut-off score of 9/10. Multivariable logistic regression was used to examine independent factors that were associated with suspected postpartum depression (EPDS ≥10). The mean age of the 428 women was 28.1 years, and the prevalence of suspected postpartum depression was 31.8%. Multivariable logistic regression using variables that were statistically significant on bivariate analyses indicated that three variables were associated with suspected postpartum depression: unintended pregnancy (AOR = 1.66, 95% CI 1.00-2.73, P = 0.049), low birth satisfaction (AOR = 1.85, 95% CI 1.00-3.43, P = 0.049), and depression during pregnancy (AOR = 3.99, 95% CI 2.35-6.77, P <0.001). In this study, unintended pregnancy, low birth satisfaction, and depression during pregnancy were independent risk factors for postpartum depression. These results suggest that the mental health of pregnant women should be monitored, and that health care services, especially family planning and supportive birth care, should be strengthened to prevent postpartum depression., Competing Interests: The authors have declared that no competing interests exist.
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- 2020
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43. Overweight and Obesity Coexist with Thinness among Lao's Urban Area Adolescents.
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Ivanovitch K, Keolangsy S, and Homkham N
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- Adolescent, Cross-Sectional Studies, Female, Humans, Laos epidemiology, Male, Malnutrition etiology, Nutritional Status, Pediatric Obesity etiology, Prevalence, Surveys and Questionnaires, Urban Population, Young Adult, Adolescent Behavior, Malnutrition epidemiology, Pediatric Obesity epidemiology
- Abstract
Introduction: In recent decades, the developing countries of Southeast Asia, including the Lao People's Democratic Republic (Lao PDR), have experienced a rapid growth of their urban population. Partly as a result of that, issues of undernutrition and overnutrition became a significant public health problem., Objective: To examine the prevalence of overweight and obesity and their related factors, among the school-attending adolescents in the Lao capital of Vientiane., Methods: A cross-sectional data on 300 adolescents aged 15-19 were collected during the months of March, April, and May 2018 by means of a self-administrated questionnaire. Anthropometric measurements were used to obtain data on height and weight. Pearson's chi-squared test, Fisher exact tests, and univariable and multivariable logistic regressions were applied in the course of the statistical analysis., Results: The study found a high prevalence of overweight/obesity (23.3%) and thinness (10.3%). Poor eating habits were noted in 67.0% of adolescents, even though 78.0% of them had a good knowledge of nutrition. Factors significantly associated with the overweight/obesity were low physical activities (aOR = 18.3; 95% CI: 5.51-60.66) and adolescents living with their guardians (aOR = 0.25; 95% CI: 0.08-0.79). Results also indicated that, in 47.3% of the cases, teachers, acting as a source of health and nutrition information, can prevent the risk of adolescents' overweight/obesity (aOR = 2.05, 95% CI = 1.11-3.80) but not their thinness (aOR = 0.4, 95% CI = 0.17-0.88)., Conclusions: Laotian adolescents are facing the spectrum of malnutrition in urban areas. To improve adolescents' nutritional status, there is a need for a collaborative approach of public health agencies that would address the issues of an effective food and nutrition policy. The school curricula should also include programs on nutrition and physical education., Competing Interests: The authors declare that there are no conflicts of interest regarding the publication of this paper., (Copyright © 2020 Katiya Ivanovitch et al.)
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- 2020
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44. Extramarital relationships in the Vietnamese migrant community in Laos: reasserting patriarchal ideologies and double standards.
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Lainez N and Nguyen T
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- Adult, Female, Humans, Laos, Male, Sex Factors, Vietnam ethnology, Extramarital Relations psychology, Family Characteristics ethnology, Marriage trends, Transients and Migrants psychology
- Abstract
Undocumented migration from Central Vietnam to Laos stretches Vietnamese families and generates marital tensions and social anxieties around the extramarital relationships that migrant husbands establish with vợ hầu (second wives), an emic term that encompasses mistresses and more stable partners. This paper sheds light on these processes via an ethnographic study on how migration from Central Vietnam to Savannakhet - a town located in Central Laos bordering Thailand - shapes family formation, marital relationships and double standards in gender and sexuality. It argues that husbands and first and second wives manage these issues by preserving family integrity, negotiating extramarital relationships and retreating from marriage. These strategies are shaped by and constitutive of normative double standards that families refer to, reinforce and in some cases transcend to make sense of the marital challenges and disruptions caused by dislocation, translocality and the intrusion of second wives in their marriages. Overall, the study emphasises that families remain committed to a domestic division of labour and to the institutions of marriage and family, albeit with some adjustments. This argument resonates with broader discussions about migration, gender and sexuality in Vietnam.
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- 2020
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45. Disease frequency among inpatients at a tertiary general hospital in Lao PDR.
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Louangpradith V, Phoummalaysith B, Kariya T, Saw YM, Yamamoto E, and Hamajima N
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- Adolescent, Adult, Aged, Aged, 80 and over, Child, Child, Preschool, Databases, Factual, Female, Humans, Infant, Infant, Newborn, Laos epidemiology, Male, Middle Aged, Patient Admission, Pilot Projects, Time Factors, Young Adult, Female Urogenital Diseases epidemiology, Hospitals, General, Inpatients, Male Urogenital Diseases epidemiology, Parturition, Poisoning epidemiology, Tertiary Care Centers, Wounds and Injuries epidemiology
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In Lao People's Democratic Republic (Lao PDR), reports on disease frequency are very limited. This study aimed to report frequencies of the main cause of admission among inpatients of a tertiary general hospital (Mittaphab Hospital) in Vientiane. Subjects were inpatients who were admitted from January 3 to February 2 in 2017. The dataset were made as a pilot run to establish hospital statistics. The data on sex, age, address (province), dates of admission and discharge, and main diagnosis were collected from paper-based medical charts. International Classification of Diseases 10 was applied for classifying the main diagnosis. During the 1-month period, 1,201 inpatients (637 males and 564 females) were admitted, including 171 (14.2%) aged <20 years and 254 (21.1%) aged ≥60 years. About 20% patients were from outside of Vientiane. Among them, 67.5% (62.5% in males and 73.8% in females) were admitted within 7 days. The main causes with more than 10% in males were injury and poisoning S00-T98 (49.8%), while those in females were injury and poisoning S00-T98 (25.2%), pregnancy and childbirth O00-O99 (19.0%), and diseases of genitourinary system N00-N99 (13.7%). Injury and poisoning S00-T98 among inpatients aged <20 years was 81.8% in males and 59.0% in females. Among those aged 20-59 years, it was 49.9% and 22.4%, and among those aged ≥60 years it was 22.3% and 16.9%, respectively. This is the first report on the frequencies of main diseases among inpatients in Lao PDR. Injury was the first main cause of admission at the tertiary hospital., Competing Interests: The authors declared no potential conflicts of interest with respect to research, authorship, and/or publication of this article.
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- 2020
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46. Looking toward 2030: Strengthening midwifery education through regional partnerships.
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Srisaeng P and Upvall MJ
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- Adult, Female, Forecasting, Humans, Laos, Pregnancy, Thailand, Capacity Building, Curriculum, Education, Medical organization & administration, Education, Medical trends, International Cooperation, Midwifery education, Nurse Midwives education, Nurse Midwives trends
- Abstract
Aims: The purpose of this paper is to describe the impact of a regional capacity-building project between Thailand and Laos that supports the United Nation's sustainable development goal 3 through midwifery education., Design: Discussion paper based on an exemplar., Data Sources: The International Confederation of Midwifery's standards of midwifery education and World Health Organization midwifery educator core competencies provided the framework for capacity-building of Lao midwifery educators., Implications for Nursing: Knowledge gained from this 2-year project (October 2015-November 2017) increased the teaching confidence of midwifery educators while linking international standards and competencies to curriculum revision. In addition, capacity-building projects based on a needs assessment and implementation from regional partners may result in policy changes at the local and national level., Conclusion: Partnerships are essential to meeting the sustainable development goals. These regional partnerships may be highly effective in creating sustainable capacity-building projects., Impact: Maternal mortality and preventing deaths of children under 5 years old continues to be a challenge across the globe despite progress made in recent years. Progress toward sustainable development goal 3, requires efforts addressed in sustainable development goal17, partnership. Laos has one of the highest maternal mortality rates in Southeast Asia. A project to increase capacity of midwifery educators demonstrated the benefit of regional partnerships in Laos to have an impact on sustainable development goal 3 ultimately improving maternal outcomes throughout the country. Partnerships especially those between countries in the same region, are crucial to the success of meeting the sustainable development goals., (© 2019 John Wiley & Sons Ltd.)
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- 2020
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47. Echinostoma aegyptica (Trematoda: Echinostomatidae) Infection in Five Riparian People in Savannakhet Province, Lao PDR.
- Author
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Chai JY, Jung BK, Chang T, Shin H, Sohn WM, Eom KS, Yong TS, Min DY, Phammasack B, Insisiengmay B, and Rim HJ
- Subjects
- Animals, Humans, Laos, Praziquantel administration & dosage, Trematode Infections drug therapy, Echinostoma isolation & purification, Trematode Infections parasitology
- Abstract
Human infection with Echinostoma aegyptica Khalil and Abaza, 1924 (Trematoda: Echinostomatidae) is extremely rare. In this study, we confirmed E. aegyptica infection in 5 riparian residents living along the Mekong River in Savannakhet Province, Lao PDR. The patients revealed eggs of Opisthorchis viverrini/minute intestinal flukes, echinostomes, and other parasites in fecal examinations using the Kato-Katz technique. Following treatment with praziquantel 30-40 mg/kg and pyrantel pamoate 10-15 mg/kg in a single dose and purging with magnesium salts, adult specimens of various helminth species were collected. Among the trematodes, echinostome flukes of 4.5-7.6 mm in length (n = 134; av. 22.3 specimens per case) were of taxonomic interest and subjected in this study. The flukes were morphologically characterized by having total 43-45 collar spines arranged in 2 alternating rows (corner spines usually 5 on each side) and compatible with previous descriptions of E. aegyptica. The patients were mixed-infected with other helminths, so specific clinical manifestations due to this echinostome fluke were difficult to determine. The present paper describes for the first time human E. aegyptica infections in Lao PDR. This is the second report of human infection (2nd-6th cases) with E. aegyptica in the world following the first one from China.
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- 2020
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48. Seroprevalence of anti-tetanus antibodies in mothers and cord blood and associated factors in health-care settings in Lao People's Democratic Republic.
- Author
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Ounnavong P, Chanthavilay P, Khampanisong P, Reinharz D, Muller CP, and Black AP
- Subjects
- Female, Humans, Infant, Newborn, Laos epidemiology, Pregnancy, Antibodies, Bacterial blood, Fetal Blood immunology, Mothers, Seroepidemiologic Studies, Tetanus immunology, Tetanus prevention & control
- Abstract
Background: Maternal neonatal tetanus (MNT) was eliminated from Lao People's Democratic Republic (PDR) in 2014. WHO recommends 80% coverage of 2 or more tetanus vaccinations (TT2+) in pregnancy to maintain MNT control. Vaccination coverage in Lao PDR varies among regions although the reasons are not clear., Methods: 185 pregnant women giving birth in three district hospitals in Savannakhet province, Lao PDR were recruited. A questionnaire was administered to determine factors associated with seroprotection and blood was taken from mother and cord blood to be tested for anti-tetanus antibodies by ELISA., Results: 77% of mothers and 79% of newborns had sufficiently protective antibody titres (>0.5 IU/ml) against tetanus. Only 70% of the mothers received one dose of TT vaccination during antenatal care (ANC) consultation and 45% received the recommended two injections. Although most of the vaccination took place during ANC 1 and 2, many were missed at these time-points. Anti-tetanus seroprotection in the mothers was associated with maternal age, number of ANC visits, number of TT vaccinations during and before pregnancy and gestational age., Conclusion: Seroprevalence of anti-tetanus antibodies in mothers and newborns was intermediate but TT2+ coverage was low in healthcare settings in Lao PDR. TT2+ coverage during ANC is likely to be significantly lower in settings with less robust ANC practices. Missed opportunities to vaccinate in ANC 1 and 2 suggest a need to promote vaccine awareness and vaccination at first ANC visit. A booster dose of TT containing vaccine should be considered for children aged between 4 and 7 years old., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2019 Elsevier Ltd. All rights reserved.)
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- 2020
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49. Economic analysis of producing vital statistics using civil registration data in Lao People's Democratic Republic.
- Author
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Mills S and Amponsah D
- Subjects
- Censuses, Cost-Benefit Analysis, Humans, Laos, Population Surveillance methods, Records economics, Vital Statistics
- Abstract
The government of Lao People's Democratic Republic (PDR) is currently in the preparation stage of a 5-year project that will establish an electronic civil registration and vital statistics (CRVS) system. The authors of this paper adapted a framework for economic analysis developed by Jimenez-Soto et al. (Jimenez-Soto et al., PLoS ONE 9(8): e106234, 2014) to assess the cost-effectiveness of producing vital statistics in Lao PDR using data from a complete electronic CRVS system, compared to using data from other sources, such as the 2015 Population and Housing Census and the 2017 Lao Social Indicator Survey (LSIS). Of 20 types of vital statistics (including birth statistics, fertility rates, and death statistics), a complete and accurate CRVS system can produce all 20 of these vital statistics, while the 2015 Census can produce 17, and the 2017 LSIS and the current civil registration system can produce 4 each. A cost-effectiveness analysis of different data sources for producing vital statistics over a 20-year projection showed that a complete and accurate CRVS system ranked best, followed by population census and population-based survey. In addition to enabling vital statistics to be produced cost-effectively, a robust civil registration system would also support improving the efficiency of public service delivery, leading to further cost savings for the country.
- Published
- 2019
- Full Text
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50. An exploration of healthy eating and physical activity habits of Hmong high-school students by disability status: A pilot study.
- Author
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Vasudevan V, Vang P, and Fernandez-Baca D
- Subjects
- Adolescent, Culture, Female, Habits, Health Promotion, Humans, Laos ethnology, Male, Minnesota, Obesity prevention & control, Pilot Projects, Schools, Diet, Healthy, Disabled Persons, Emigrants and Immigrants, Ethnicity, Exercise, Health Behavior, Students
- Abstract
Background: Immigrants are at risk of being obese from obesogenic environments and face factors which limit physical activity and healthy eating. While Hmong immigrants acknowledge the importance of healthy eating and physical activity, to our knowledge no studies have looked at health promoting behaviors among Hmong adolescents with and without disabilities., Objective: In this paper, we seek to provide baseline data about physical activity and healthy eating among Hmong high school students with disabilities in Minnesota., Methods: We used data from the 2016 Minnesota Student Survey. The study included responses from 1,824 Hmong high school students. We compared physical activity and healthy eating of Hmong high school students by disability status., Results: Approximately 13% of Hmong had a disability (n = 239). A greater percentage of Hmong high school students with disabilities reported zero days of 60 min of physical activity (20.5% vs 14.8%, p < 0.10) and zero days participation in sports teams outside of school (69.0% vs. 64.3%, p < 0.10). Compared to Hmong students without disabilities, a significantly lower percentage of Hmong students with disabilities reported not receiving free/reduced lunch (66.5% vs 73.1%, p < 0.05) and significantly more likely to skip meals because their family did not have enough money (14.2% vs 9.7%, p < 0.05)., Conclusion: Adolescent Hmong with disabilities encounter both cultural and disability specific factors which could contribute to poorer health promoting behaviors. This study shines light on the need for social policy that promotes disability inclusive, culturally specific health promotion information and advocacy for immigrant youth with disabilities and their families in schools and communities., (Copyright © 2019 Elsevier Inc. All rights reserved.)
- Published
- 2019
- Full Text
- View/download PDF
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