187 results on '"Boonyasiri A"'
Search Results
152. Prevalence of antibiotic resistant bacteria in healthy adults, foods, food animals, and the environment in selected areas in Thailand
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Boonyasiri, Adhiratha, primary, Tangkoskul, Teerawit, additional, Seenama, Chrakrapong, additional, Saiyarin, Jatuporn, additional, Tiengrim, Surapee, additional, and Thamlikitkul, Visanu, additional
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- 2014
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153. Sparganosis Presenting as Cauda Equina Syndrome with Molecular Identification of the Parasite in Tissue Sections
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Boonyasiri, Adhiratha, primary, Cheunsuchon, Pornsuk, additional, Srirabheebhat, Prajak, additional, Yamasaki, Hiroshi, additional, Maleewong, Wanchai, additional, and Intapan, Pewpan M., additional
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- 2013
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154. A Study on the Graft-Copolymerization of 2-Acryloyloxyethyl Acid Phosphate onto Natural Rubber
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Sorarutayangkoor, Chadchai, primary, Boonyasiri, Jirapong, additional, and Sakdapipanich, Jitladda, additional
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- 2013
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155. Good's Syndrome with Pneumocystis jiroveci Lymphadenitis and Pure Red Cell Aplasia.
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Jintana Srisompong, Torpong Thongngarm, Ruchira Ruangchira-urai, Popchai Ngamskulrungroj, and Adhiratha Boonyasiri
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PNEUMOCYSTIS jiroveci ,ASCOMYCETES - Abstract
Copyright of Journal of Microbiology & Infectious Diseases is the property of Journal of Microbiology & Infectious Diseases and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2016
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156. Etiologies of Central Diabetes Insipidus in Thai Children
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Santiprabhob, J., primary, Likitmaskul, S., additional, Boonyasiri, A., additional, Boonsathorn, S., additional, and Buddawong, T., additional
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- 2005
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157. Nine Human Sparganosis Cases in Thailand with Molecular Identification of Causative Parasite Species.
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Adhiratha Boonyasiri, Pornsuk Cheunsuchon, Yupin Suputtamongkol, Hiroshi Yamasaki, Oranuch Sanpool, Wanchai Maleewong, and Pewpan M. Intapan
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- 2014
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158. Sparganosis Presenting as Cauda Equina Syndrome with Molecular Identification of the Parasite in Tissue Sections.
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Adhiratha Boonyasiri, Pornsuk Cheunsuchon, Prajak Srirabheebhat, Hiroshi Yamasaki, Wanchai Maleewong, and Pewpan M. Intapan
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CAUDA equina ,MOLECULAR parasitology ,BACKACHE ,PARAPARESIS ,MAGNETIC resonance imaging ,SUBARACHNOID space ,MEDULLA oblongata - Abstract
A 52-year-old woman presented with lower back pain, progressive symmetrical paraparesis with sensory impairment, and sphincter disturbance. Magnetic resonance imaging (MRI) of the whole spine revealed multiple intradural extramedullary serpiginous-mass lesions in the subarachnoid space continuously from the prepontine to the anterior part of the medulla oblongata levels, C7, T2-T8, and T12 vertebral levels distally until the end of the theca sac and filling-in the right S1 neural foramen. Sparganosis was diagnosed by demonstration of the sparganum in histopathological sections of surgically resected tissues and also by the presence of serum IgG antibodies by ELISA. DNA was extracted from unstained tissue sections, and a partial fragment of mitochondrial cytochrome c oxidase subunit 1 (cox1) gene was amplified using a primer set specific for Spirometra spp. coxf. After sequencing of the PCR-amplicon and alignment of the nucleotide sequence data, the causative agent was identified as the larva of Spirometra erinaceieuropaei. [ABSTRACT FROM AUTHOR]
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- 2013
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159. Rapid detection of mobilized colistin resistance using a nucleic acid based lab-on-a-chip diagnostic system
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Nicolas Moser, Lenka Fisarova, Ivana Pennisi, Kenny Malpartida-Cardenas, Elita Jauneikaite, Alireza Abdolrasouli, Xavier Didelot, Frances Davies, A Boonyasiri, Alison Holmes, Ahmad Moniri, Frances Bolt, Jesus Rodriguez-Manzano, Pantelis Georgiou, Jonathan A. Otter, Imperial College Healthcare NHS Trust- BRC Funding, and National Institute for Health Research
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0301 basic medicine ,Nucleic acid quantitation ,Science ,030106 microbiology ,Loop-mediated isothermal amplification ,Drug resistance ,Computational biology ,Article ,law.invention ,03 medical and health sciences ,Antibiotic resistance ,Bacterial Proteins ,law ,Lab-On-A-Chip Devices ,Nucleic Acids ,Drug Resistance, Bacterial ,Diagnosis ,medicine ,Humans ,Whole genome sequencing ,Multidisciplinary ,Bacteria ,Lab-on-a-chip ,Colistin ,Bacterial Infections ,QP ,Anti-Bacterial Agents ,QR ,030104 developmental biology ,Nucleic acid ,Medicine ,Infectious diseases ,Microbiology techniques ,medicine.drug - Abstract
The increasing prevalence of antimicrobial resistance is a serious threat to global public health. One of the most concerning trends is the rapid spread of Carbapenemase-Producing Organisms (CPO), where colistin has become the last-resort antibiotic treatment. The emergence of colistin resistance, including the spread of mobilized colistin resistance (mcr) genes, raises the possibility of untreatable bacterial infections and motivates the development of improved diagnostics for the detection of colistin-resistant organisms. This work demonstrates a rapid response for detecting the most recently reported mcr gene, mcr−9, using a portable and affordable lab-on-a-chip (LoC) platform, offering a promising alternative to conventional laboratory-based instruments such as real-time PCR (qPCR). The platform combines semiconductor technology, for non-optical real-time DNA sensing, with a smartphone application for data acquisition, visualization and cloud connectivity. This technology is enabled by using loop-mediated isothermal amplification (LAMP) as the chemistry for targeted DNA detection, by virtue of its high sensitivity, specificity, yield, and manageable temperature requirements. Here, we have developed the first LAMP assay for mcr−9 - showing high sensitivity (down to 100 genomic copies/reaction) and high specificity (no cross-reactivity with other mcr variants). This assay is demonstrated through supporting a hospital investigation where we analyzed nucleic acids extracted from 128 carbapenemase-producing bacteria isolated from clinical and screening samples and found that 41 carried mcr−9 (validated using whole genome sequencing). Average positive detection times were 6.58 ± 0.42 min when performing the experiments on a conventional qPCR instrument (n = 41). For validating the translation of the LAMP assay onto a LoC platform, a subset of the samples were tested (n = 20), showing average detection times of 6.83 ± 0.92 min for positive isolates (n = 14). All experiments detected mcr−9 in under 10 min, and both platforms showed no statistically significant difference (p-value > 0.05). When sample preparation and throughput capabilities are integrated within this LoC platform, the adoption of this technology for the rapid detection and surveillance of antimicrobial resistance genes will decrease the turnaround time for DNA detection and resistotyping, improving diagnostic capabilities, patient outcomes, and the management of infectious diseases.
160. Additional file 1 of Response to COVID-19 in South Korea and implications for lifting stringent interventions
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Dighe, Amy, Cattarino, Lorenzo, Cuomo-Dannenburg, Gina, Skarp, Janetta, Imai, Natsuko, Bhatia, Sangeeta, Gaythorpe, Katy A. M., Ainslie, Kylie E. C., Baguelin, Marc, Bhatt, Samir, Adhiratha Boonyasiri, Brazeau, Nicholas F., Cooper, Laura V., Coupland, Helen, Cucunuba, Zulma, Dorigatti, Ilaria, Eales, Oliver D., Elsland, Sabine L. Van, FitzJohn, Richard G., Green, William D., Haw, David J., Hinsley, Wes, Knock, Edward, Laydon, Daniel J., Mellan, Thomas, Swapnil Mishra, Nedjati-Gilani, Gemma, Nouvellet, Pierre, Pons-Salort, Margarita, Thompson, Hayley A., H. Juliette T. Unwin, Verity, Robert, Vollmer, Michaela A. C., Walters, Caroline E., Watson, Oliver J., Whittaker, Charles, Whittles, Lilith K., Ghani, Azra C., Donnelly, Christl A., Ferguson, Neil M., and Riley, Steven
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3. Good health - Abstract
Additional file 1 : Table S1. A detailed timeline of key events and policy changes throughout the COVID-19 outbreak in South Korea. Table S2. Most recent case definitions for suspected cases and patients under investigation for COVID-19 infection (Source: MOHW, last updated June 25th). Section 2. Contact tracing of individuals – detailed protocol for contact tracing in South Korea. Figure S1. A regional breakdown of the change in epidemiological links of confirmed cases over time. Table S3. The prior means and standard deviations explored in our sensitivity analysis of the Rt estimates.
161. Additional file 1 of Response to COVID-19 in South Korea and implications for lifting stringent interventions
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Dighe, Amy, Cattarino, Lorenzo, Cuomo-Dannenburg, Gina, Skarp, Janetta, Imai, Natsuko, Bhatia, Sangeeta, Gaythorpe, Katy A. M., Ainslie, Kylie E. C., Baguelin, Marc, Bhatt, Samir, Adhiratha Boonyasiri, Brazeau, Nicholas F., Cooper, Laura V., Coupland, Helen, Cucunuba, Zulma, Dorigatti, Ilaria, Eales, Oliver D., Elsland, Sabine L. Van, FitzJohn, Richard G., Green, William D., Haw, David J., Hinsley, Wes, Knock, Edward, Laydon, Daniel J., Mellan, Thomas, Swapnil Mishra, Nedjati-Gilani, Gemma, Nouvellet, Pierre, Pons-Salort, Margarita, Thompson, Hayley A., H. Juliette T. Unwin, Verity, Robert, Vollmer, Michaela A. C., Walters, Caroline E., Watson, Oliver J., Whittaker, Charles, Whittles, Lilith K., Ghani, Azra C., Donnelly, Christl A., Ferguson, Neil M., and Riley, Steven
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3. Good health - Abstract
Additional file 1 : Table S1. A detailed timeline of key events and policy changes throughout the COVID-19 outbreak in South Korea. Table S2. Most recent case definitions for suspected cases and patients under investigation for COVID-19 infection (Source: MOHW, last updated June 25th). Section 2. Contact tracing of individuals – detailed protocol for contact tracing in South Korea. Figure S1. A regional breakdown of the change in epidemiological links of confirmed cases over time. Table S3. The prior means and standard deviations explored in our sensitivity analysis of the Rt estimates.
162. Epidemiology of Antibiotic Use and Antimicrobial Resistance in Selected Communities in Thailand
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Khamsarn, S., Nampoonsak, Y., Busamaro, S., Tangkoskul, T., Seenama, C., Pinyo Rattanaumpawan, Boonyasiri, A., and Thamlikitkul, V.
163. Bacterial contamination of fresh traumatic wounds at Trauma Center, Siriraj Hospital, Bangkok, Thailand
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RUJIPAS SIRIJATUPHAT, Siritongtaworn, P., Sripojtham, V., Boonyasiri, A., and Thamlikitkul, V.
164. Effectiveness of multifaceted interventions on rational use of antibiotics for patients with upper respiratory tract infections and acute diarrhea
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Adhiratha Boonyasiri and Thamlikitkul, V.
165. Understanding the potential impact of different drug properties on SARS-CoV-2 transmission and disease burden : a modelling analysis
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Pontificia Universidad Javeriana. Facultad de Medicina. Departamento de Epidemiología Clínica y Bioestadística, Whittaker, Charles, Watson, Oliver J., Moreno, Carlos Alvarez, Angkasekwinai, Nasikarn, Boonyasiri, Adhiratha, Triana, Luis Carlos, Chanda, Duncan, Charoenpong, Lantharita, Chayakulkeeree, Methee, Cooke, Graham S., Croda, Julio, Cucunubá, Zulma M, Djaafara, Bimandra A., Estofolete, Cassia F., Grillet, Maria Eugenia, Faria, Nuno R, Figueiredo Costa, Silvia, Forero Peña, David A, Gibb, Diana M, Gordon, Anthony C, Hamers, Raph L., Hamlet, Arran, Irawany, Vera, Jitmuang, Anupop, Hallett, Timothy B., Walker, Patrick G.T., Winskill, Peter, Valderrama-Beltrán, Sandra, Udwadia, Zarir, Thompson, Hayley A., Srisangthong, Pratthana, Sposito, Andrei C., Sirijatuphat, Rujipas, Sari, Djayanti, Sangkaew, Sorawat, Sabino, Ester C., Rodger, Alison J., Qavi, Ambar, Promsin, Panuwat, Phillips, Andrew N., Perroud Jr., Mauricio W., Ortiz Prado, Esteban, Nogueira, Mauricio L., Hannah Njeri, Ng’ang’a Irene, Ngamprasertchai, Thundon, Nayagam, Shevanthi, Mustafa, Rima, Lopardo, Gustavo, Levin, Anna S., Lampo, Margarita, Keurueangkul, Nukool, Pontificia Universidad Javeriana. Facultad de Medicina. Departamento de Epidemiología Clínica y Bioestadística, Whittaker, Charles, Watson, Oliver J., Moreno, Carlos Alvarez, Angkasekwinai, Nasikarn, Boonyasiri, Adhiratha, Triana, Luis Carlos, Chanda, Duncan, Charoenpong, Lantharita, Chayakulkeeree, Methee, Cooke, Graham S., Croda, Julio, Cucunubá, Zulma M, Djaafara, Bimandra A., Estofolete, Cassia F., Grillet, Maria Eugenia, Faria, Nuno R, Figueiredo Costa, Silvia, Forero Peña, David A, Gibb, Diana M, Gordon, Anthony C, Hamers, Raph L., Hamlet, Arran, Irawany, Vera, Jitmuang, Anupop, Hallett, Timothy B., Walker, Patrick G.T., Winskill, Peter, Valderrama-Beltrán, Sandra, Udwadia, Zarir, Thompson, Hayley A., Srisangthong, Pratthana, Sposito, Andrei C., Sirijatuphat, Rujipas, Sari, Djayanti, Sangkaew, Sorawat, Sabino, Ester C., Rodger, Alison J., Qavi, Ambar, Promsin, Panuwat, Phillips, Andrew N., Perroud Jr., Mauricio W., Ortiz Prado, Esteban, Nogueira, Mauricio L., Hannah Njeri, Ng’ang’a Irene, Ngamprasertchai, Thundon, Nayagam, Shevanthi, Mustafa, Rima, Lopardo, Gustavo, Levin, Anna S., Lampo, Margarita, and Keurueangkul, Nukool
166. Evaluation of Accuracy of Rapid Tests for Group A Beta Hemolytic Streptococci in Out-patients With Sore Throat
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Adhiratha Boonyasiri, Dr.
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- 2022
167. Dosing and Pharmacokinetics of Polymyxin B in Patients with Renal Insufficiency
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Thamlikitkul, Visanu, Dubrovskaya, Yanina, Manchandani, Pooja, Ngamprasertchai, Thundon, Boonyasiri, Adhiratha, Babic, Jessica T., and Tam, Vincent H.
- Abstract
ABSTRACTPolymyxin B remains the last-line treatment option for multidrug-resistant Gram-negative bacterial infections. Current U.S. Food and Drug Administration-approved prescribing information recommends that polymyxin B dosing should be adjusted according to the patient's renal function, despite studies that have shown poor correlation between creatinine and polymyxin B clearance. The objective of the present study was to determine whether steady-state polymyxin B exposures in patients with normal renal function were different from those in patients with renal insufficiency. Nineteen adult patients who received intravenous polymyxin B (1.5 to 2.5 mg/kg [actual body weight] daily) were included. To measure polymyxin B concentrations, serial blood samples were obtained from each patient after receiving polymyxin B for at least 48 h. The primary outcome was polymyxin B exposure at steady state, as reflected by the area under the concentration-time curve (AUC) over 24 h. Five patients had normal renal function (estimated creatinine clearance [CLCR] ≥ 80 ml/min) at baseline, whereas 14 had renal insufficiency (CLCR< 80 ml/min). The mean AUC of polymyxin B ± the standard deviation in the normal renal function cohort was 63.5 ± 16.6 mg·h/liter compared to 56.0 ± 17.5 mg·h/liter in the renal insufficiency cohort (P= 0.42). Adjusting the AUC for the daily dose (in mg/kg of actual body weight) did not result in a significant difference (28.6 ± 7.0 mg·h/liter versus 29.7 ± 11.2 mg·h/liter, P= 0.80). Polymyxin B exposures in patients with normal and impaired renal function after receiving standard dosing of polymyxin B were comparable. Polymyxin B dosing adjustment in patients with renal insufficiency should be reexamined.
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- 2016
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168. Response to COVID-19 in South Korea and implications for lifting stringent interventions
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Amy Dighe, Lorenzo Cattarino, Gina Cuomo-Dannenburg, Janetta Skarp, Natsuko Imai, Sangeeta Bhatia, Katy A. M. Gaythorpe, Kylie E. C. Ainslie, Marc Baguelin, Samir Bhatt, Adhiratha Boonyasiri, Nicholas F. Brazeau, Laura V. Cooper, Helen Coupland, Zulma Cucunuba, Ilaria Dorigatti, Oliver D. Eales, Sabine L. van Elsland, Richard G. FitzJohn, William D. Green, David J. Haw, Wes Hinsley, Edward Knock, Daniel J. Laydon, Thomas Mellan, Swapnil Mishra, Gemma Nedjati-Gilani, Pierre Nouvellet, Margarita Pons-Salort, Hayley A. Thompson, H. Juliette T. Unwin, Robert Verity, Michaela A. C. Vollmer, Caroline E. Walters, Oliver J. Watson, Charles Whittaker, Lilith K. Whittles, Azra C. Ghani, Christl A. Donnelly, Neil M. Ferguson, and Steven Riley
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COVID-19 ,South Korea ,Public health interventions ,Reproduction number ,Contact tracing ,Medicine - Abstract
Abstract Background After experiencing a sharp growth in COVID-19 cases early in the pandemic, South Korea rapidly controlled transmission while implementing less stringent national social distancing measures than countries in Europe and the USA. This has led to substantial interest in their “test, trace, isolate” strategy. However, it is important to understand the epidemiological peculiarities of South Korea’s outbreak and characterise their response before attempting to emulate these measures elsewhere. Methods We systematically extracted numbers of suspected cases tested, PCR-confirmed cases, deaths, isolated confirmed cases, and numbers of confirmed cases with an identified epidemiological link from publicly available data. We estimated the time-varying reproduction number, R t , using an established Bayesian framework, and reviewed the package of interventions implemented by South Korea using our extracted data, plus published literature and government sources. Results We estimated that after the initial rapid growth in cases, R t dropped below one in early April before increasing to a maximum of 1.94 (95%CrI, 1.64–2.27) in May following outbreaks in Seoul Metropolitan Region. By mid-June, R t was back below one where it remained until the end of our study (July 13th). Despite less stringent “lockdown” measures, strong social distancing measures were implemented in high-incidence areas and studies measured a considerable national decrease in movement in late February. Testing the capacity was swiftly increased, and protocols were in place to isolate suspected and confirmed cases quickly; however, we could not estimate the delay to isolation using our data. Accounting for just 10% of cases, individual case-based contact tracing picked up a relatively minor proportion of total cases, with cluster investigations accounting for 66%. Conclusions Whilst early adoption of testing and contact tracing is likely to be important for South Korea’s successful outbreak control, other factors including regional implementation of strong social distancing measures likely also contributed. The high volume of testing and the low number of deaths suggest that South Korea experienced a small epidemic relative to other countries. Caution is needed in attempting to replicate the South Korean response in populations with larger more geographically widespread epidemics where finding, testing, and isolating cases that are linked to clusters may be more difficult.
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- 2020
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169. Therapy of Ventilator-associated Tracheobronchitis Caused by Gram Negative Bacteria With Nebulized Colistin
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Adhiratha Boonyasiri, Dr.
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- 2015
170. Effectiveness of Chlorhexidine Wipe for Prevention of Multidrug-resistant Organisms in Intensive Care Unit Patients
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Adhiratha Boonyasiri, Doctor
- Published
- 2015
171. Potential impact of the COVID-19 pandemic on HIV, tuberculosis, and malaria in low-income and middle-income countries: a modelling study
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Alexandra B Hogan, PhD, Britta L Jewell, PhD, Ellie Sherrard-Smith, PhD, Juan F Vesga, PhD, Oliver J Watson, PhD, Charles Whittaker, MSc, Arran Hamlet, PhD, Jennifer A Smith, DPhil, Peter Winskill, PhD, Robert Verity, PhD, Marc Baguelin, PhD, John A Lees, PhD, Lilith K Whittles, PhD, Kylie E C Ainslie, PhD, Samir Bhatt, DPhil, Adhiratha Boonyasiri, MD, Nicholas F Brazeau, PhD, Lorenzo Cattarino, PhD, Laura V Cooper, MPhil, Helen Coupland, MRes, Gina Cuomo-Dannenburg, MMath, Amy Dighe, MRes, Bimandra A Djaafara, MRes, Christl A Donnelly, ProfScD, Jeff W Eaton, PhD, Sabine L van Elsland, PhD, Richard G FitzJohn, PhD, Han Fu, PhD, Katy A M Gaythorpe, PhD, William Green, MRes, David J Haw, PhD, Sarah Hayes, MSc, Wes Hinsley, PhD, Natsuko Imai, PhD, Daniel J Laydon, PhD, Tara D Mangal, PhD, Thomas A Mellan, PhD, Swapnil Mishra, PhD, Gemma Nedjati-Gilani, PhD, Kris V Parag, PhD, Hayley A Thompson, MPH, H Juliette T Unwin, PhD, Michaela A C Vollmer, PhD, Caroline E Walters, PhD, Haowei Wang, MSc, Yuanrong Wang, Xiaoyue Xi, MSc, Neil M Ferguson, ProfDPhil, Lucy C Okell, PhD, Thomas S Churcher, PhD, Nimalan Arinaminpathy, DPhil, Azra C Ghani, ProfPhD, Patrick G T Walker, PhD, and Timothy B Hallett, ProfPhD
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Public aspects of medicine ,RA1-1270 - Abstract
Summary: Background: COVID-19 has the potential to cause substantial disruptions to health services, due to cases overburdening the health system or response measures limiting usual programmatic activities. We aimed to quantify the extent to which disruptions to services for HIV, tuberculosis, and malaria in low-income and middle-income countries with high burdens of these diseases could lead to additional loss of life over the next 5 years. Methods: Assuming a basic reproduction number of 3·0, we constructed four scenarios for possible responses to the COVID-19 pandemic: no action, mitigation for 6 months, suppression for 2 months, or suppression for 1 year. We used established transmission models of HIV, tuberculosis, and malaria to estimate the additional impact on health that could be caused in selected settings, either due to COVID-19 interventions limiting activities, or due to the high demand on the health system due to the COVID-19 pandemic. Findings: In high-burden settings, deaths due to HIV, tuberculosis, and malaria over 5 years could increase by up to 10%, 20%, and 36%, respectively, compared with if there was no COVID-19 pandemic. The greatest impact on HIV was estimated to be from interruption to antiretroviral therapy, which could occur during a period of high health system demand. For tuberculosis, the greatest impact would be from reductions in timely diagnosis and treatment of new cases, which could result from any prolonged period of COVID-19 suppression interventions. The greatest impact on malaria burden could be as a result of interruption of planned net campaigns. These disruptions could lead to a loss of life-years over 5 years that is of the same order of magnitude as the direct impact from COVID-19 in places with a high burden of malaria and large HIV and tuberculosis epidemics. Interpretation: Maintaining the most critical prevention activities and health-care services for HIV, tuberculosis, and malaria could substantially reduce the overall impact of the COVID-19 pandemic. Funding: Bill & Melinda Gates Foundation, Wellcome Trust, UK Department for International Development, and Medical Research Council.
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- 2020
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172. Anonymised and aggregated crowd level mobility data from mobile phones suggests that initial compliance with COVID-19 social distancing interventions was high and geographically consistent across the UK [version 1; peer review: 2 approved]
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Benjamin Jeffrey, Caroline E. Walters, Kylie E. C. Ainslie, Oliver Eales, Constanze Ciavarella, Sangeeta Bhatia, Sarah Hayes, Marc Baguelin, Adhiratha Boonyasiri, Nicholas F. Brazeau, Gina Cuomo-Dannenburg, Richard G. FitzJohn, Katy Gaythorpe, William Green, Natsuko Imai, Thomas A. Mellan, Swapnil Mishra, Pierre Nouvellet, H. Juliette T. Unwin, Robert Verity, Michaela Vollmer, Charles Whittaker, Neil M. Ferguson, Christl A. Donnelly, and Steven Riley
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Medicine ,Science - Abstract
Background: Since early March 2020, the COVID-19 epidemic across the United Kingdom has led to a range of social distancing policies, which have resulted in reduced mobility across different regions. Crowd level data on mobile phone usage can be used as a proxy for actual population mobility patterns and provide a way of quantifying the impact of social distancing measures on changes in mobility. Methods: Here, we use two mobile phone-based datasets (anonymised and aggregated crowd level data from O2 and from the Facebook app on mobile phones) to assess changes in average mobility, both overall and broken down into high and low population density areas, and changes in the distribution of journey lengths. Results: We show that there was a substantial overall reduction in mobility, with the most rapid decline on the 24th March 2020, the day after the Prime Minister’s announcement of an enforced lockdown. The reduction in mobility was highly synchronized across the UK. Although mobility has remained low since 26th March 2020, we detect a gradual increase since that time. We also show that the two different datasets produce similar trends, albeit with some location-specific differences. We see slightly larger reductions in average mobility in high-density areas than in low-density areas, with greater variation in mobility in the high-density areas: some high-density areas eliminated almost all mobility. Conclusions: These analyses form a baseline from which to observe changes in behaviour in the UK as social distancing is eased and inform policy towards the future control of SARS-CoV-2 in the UK.
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- 2020
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173. Implementation of global antimicrobial resistance surveillance system (GLASS) in patients with bacteremia.
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Rujipas Sirijatuphat, Kantarida Sripanidkulchai, Adhiratha Boonyasiri, Pinyo Rattanaumpawan, Orawan Supapueng, Pattarachai Kiratisin, and Visanu Thamlikitkul
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Medicine ,Science - Abstract
The global antimicrobial resistance surveillance system (GLASS) was launched by the World Health Organization (WHO) in 2015. GLASS is a surveillance system for clinical specimens that are sent to microbiology laboratory for clinical purposes. The unique feature of GLASS is that clinical data is combined with microbiological data, and deduplication of the microbiological results is performed. The objective of the study was to determine feasibility and benefit of GLASS for surveillance of blood culture specimens. GLASS was implemented at Siriraj Hospital in Bangkok, Thailand using a locally developed web application program (app) to transfer blood culture specimen data, and to enter clinical data of patients with positive blood culture by infection control nurses and physicians via the app installed in their smart phones. The rate of positive blood culture specimens with true infection was 15.2%. Escherichia coli was the most common cause of bacteremia. Secondary bacteremia, primary bacteremia, and central line-associated blood stream infection was observed in 61.8%, 30.6%, and 12.6% of cases, respectively. Sepsis was observed in 56.9% of patients. E.coli was significantly more common in community-acquired bacteremia, whereas Klebsiella pneumoniae, Pseudomonas aeruginosa, methicillin-resistant Staphylococcus aureus, and Acinetobacter baumannii were significantly more common in hospital-acquired bacteremia. Hospital-acquired isolates of E.coli, K.pneumoniae, A.baumannii, P.aeruginosa, S.aureus and Enterococcus faecium were more resistant to antibiotics than community-acquired isolates. In-hospital mortality was significantly higher in patients with antibiotic-resistant bacteremia than in patients with antibiotic non-resistant bacteremia (40.5% vs. 28.5%, p
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- 2018
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174. Gonococcal Subcutaneous Abscess and Pyomyositis: A Case Report
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Anupop Jitmuang, Adhiratha Boonyasiri, Nukool Keurueangkul, Amornrut Leelaporn, and Amorn Leelarasamee
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Infectious and parasitic diseases ,RC109-216 - Abstract
Disseminated gonococcal infection (DGI) is an uncommon complication of Neisseria gonorrhoeae infection, its manifestation varies from a classic arthritis-dermatitis syndrome to uncommon pyogenic infections of several organs. Herein, we reported atypical presentation of DGI with subcutaneous abscess of right knee, pyomyositis of right lower extremity, and subsequently complicated by Escherichia coli pyomyositis. This infection responded to appropriate antimicrobial therapy and prompt surgical management with good clinical outcome.
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- 2012
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175. Potential impact of the COVID-19 pandemic on HIV, tuberculosis, and malaria in low-income and middle-income countries: a modelling study.
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Hogan AB, Jewell BL, Sherrard-Smith E, Vesga JF, Watson OJ, Whittaker C, Hamlet A, Smith JA, Winskill P, Verity R, Baguelin M, Lees JA, Whittles LK, Ainslie KEC, Bhatt S, Boonyasiri A, Brazeau NF, Cattarino L, Cooper LV, Coupland H, Cuomo-Dannenburg G, Dighe A, Djaafara BA, Donnelly CA, Eaton JW, van Elsland SL, FitzJohn RG, Fu H, Gaythorpe KAM, Green W, Haw DJ, Hayes S, Hinsley W, Imai N, Laydon DJ, Mangal TD, Mellan TA, Mishra S, Nedjati-Gilani G, Parag KV, Thompson HA, Unwin HJT, Vollmer MAC, Walters CE, Wang H, Wang Y, Xi X, Ferguson NM, Okell LC, Churcher TS, Arinaminpathy N, Ghani AC, Walker PGT, and Hallett TB
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- COVID-19, HIV Infections epidemiology, HIV Infections mortality, Humans, Malaria epidemiology, Malaria mortality, Models, Theoretical, Tuberculosis epidemiology, Tuberculosis mortality, Coronavirus Infections epidemiology, Developing Countries, HIV Infections prevention & control, Health Services Accessibility, Malaria prevention & control, Pandemics, Pneumonia, Viral epidemiology, Tuberculosis prevention & control
- Abstract
Background: COVID-19 has the potential to cause substantial disruptions to health services, due to cases overburdening the health system or response measures limiting usual programmatic activities. We aimed to quantify the extent to which disruptions to services for HIV, tuberculosis, and malaria in low-income and middle-income countries with high burdens of these diseases could lead to additional loss of life over the next 5 years., Methods: Assuming a basic reproduction number of 3·0, we constructed four scenarios for possible responses to the COVID-19 pandemic: no action, mitigation for 6 months, suppression for 2 months, or suppression for 1 year. We used established transmission models of HIV, tuberculosis, and malaria to estimate the additional impact on health that could be caused in selected settings, either due to COVID-19 interventions limiting activities, or due to the high demand on the health system due to the COVID-19 pandemic., Findings: In high-burden settings, deaths due to HIV, tuberculosis, and malaria over 5 years could increase by up to 10%, 20%, and 36%, respectively, compared with if there was no COVID-19 pandemic. The greatest impact on HIV was estimated to be from interruption to antiretroviral therapy, which could occur during a period of high health system demand. For tuberculosis, the greatest impact would be from reductions in timely diagnosis and treatment of new cases, which could result from any prolonged period of COVID-19 suppression interventions. The greatest impact on malaria burden could be as a result of interruption of planned net campaigns. These disruptions could lead to a loss of life-years over 5 years that is of the same order of magnitude as the direct impact from COVID-19 in places with a high burden of malaria and large HIV and tuberculosis epidemics., Interpretation: Maintaining the most critical prevention activities and health-care services for HIV, tuberculosis, and malaria could substantially reduce the overall impact of the COVID-19 pandemic., Funding: Bill & Melinda Gates Foundation, Wellcome Trust, UK Department for International Development, and Medical Research Council., (Copyright © 2020 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2020
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176. Estimates of the severity of coronavirus disease 2019: a model-based analysis.
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Verity R, Okell LC, Dorigatti I, Winskill P, Whittaker C, Imai N, Cuomo-Dannenburg G, Thompson H, Walker PGT, Fu H, Dighe A, Griffin JT, Baguelin M, Bhatia S, Boonyasiri A, Cori A, Cucunubá Z, FitzJohn R, Gaythorpe K, Green W, Hamlet A, Hinsley W, Laydon D, Nedjati-Gilani G, Riley S, van Elsland S, Volz E, Wang H, Wang Y, Xi X, Donnelly CA, Ghani AC, and Ferguson NM
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Betacoronavirus, COVID-19, Child, Child, Preschool, China epidemiology, Hospitalization statistics & numerical data, Humans, Incidence, Infant, Infant, Newborn, Middle Aged, Models, Statistical, SARS-CoV-2, Young Adult, Coronavirus Infections mortality, Pandemics statistics & numerical data, Pneumonia, Viral mortality
- Abstract
Background: In the face of rapidly changing data, a range of case fatality ratio estimates for coronavirus disease 2019 (COVID-19) have been produced that differ substantially in magnitude. We aimed to provide robust estimates, accounting for censoring and ascertainment biases., Methods: We collected individual-case data for patients who died from COVID-19 in Hubei, mainland China (reported by national and provincial health commissions to Feb 8, 2020), and for cases outside of mainland China (from government or ministry of health websites and media reports for 37 countries, as well as Hong Kong and Macau, until Feb 25, 2020). These individual-case data were used to estimate the time between onset of symptoms and outcome (death or discharge from hospital). We next obtained age-stratified estimates of the case fatality ratio by relating the aggregate distribution of cases to the observed cumulative deaths in China, assuming a constant attack rate by age and adjusting for demography and age-based and location-based under-ascertainment. We also estimated the case fatality ratio from individual line-list data on 1334 cases identified outside of mainland China. Using data on the prevalence of PCR-confirmed cases in international residents repatriated from China, we obtained age-stratified estimates of the infection fatality ratio. Furthermore, data on age-stratified severity in a subset of 3665 cases from China were used to estimate the proportion of infected individuals who are likely to require hospitalisation., Findings: Using data on 24 deaths that occurred in mainland China and 165 recoveries outside of China, we estimated the mean duration from onset of symptoms to death to be 17·8 days (95% credible interval [CrI] 16·9-19·2) and to hospital discharge to be 24·7 days (22·9-28·1). In all laboratory confirmed and clinically diagnosed cases from mainland China (n=70 117), we estimated a crude case fatality ratio (adjusted for censoring) of 3·67% (95% CrI 3·56-3·80). However, after further adjusting for demography and under-ascertainment, we obtained a best estimate of the case fatality ratio in China of 1·38% (1·23-1·53), with substantially higher ratios in older age groups (0·32% [0·27-0·38] in those aged <60 years vs 6·4% [5·7-7·2] in those aged ≥60 years), up to 13·4% (11·2-15·9) in those aged 80 years or older. Estimates of case fatality ratio from international cases stratified by age were consistent with those from China (parametric estimate 1·4% [0·4-3·5] in those aged <60 years [n=360] and 4·5% [1·8-11·1] in those aged ≥60 years [n=151]). Our estimated overall infection fatality ratio for China was 0·66% (0·39-1·33), with an increasing profile with age. Similarly, estimates of the proportion of infected individuals likely to be hospitalised increased with age up to a maximum of 18·4% (11·0-37·6) in those aged 80 years or older., Interpretation: These early estimates give an indication of the fatality ratio across the spectrum of COVID-19 disease and show a strong age gradient in risk of death., Funding: UK Medical Research Council., (Copyright © 2020 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2020
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177. Rapid Detection of Mobilized Colistin Resistance using a Nucleic Acid Based Lab-on-a-Chip Diagnostic System.
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Rodriguez-Manzano J, Moser N, Malpartida-Cardenas K, Moniri A, Fisarova L, Pennisi I, Boonyasiri A, Jauneikaite E, Abdolrasouli A, Otter JA, Bolt F, Davies F, Didelot X, Holmes A, and Georgiou P
- Subjects
- Anti-Bacterial Agents pharmacology, Bacteria drug effects, Bacteria isolation & purification, Bacterial Infections drug therapy, Bacterial Infections genetics, Bacterial Infections microbiology, Bacterial Proteins metabolism, Humans, Nucleic Acids genetics, Bacteria genetics, Bacterial Infections diagnosis, Bacterial Proteins genetics, Colistin pharmacology, Drug Resistance, Bacterial, Lab-On-A-Chip Devices, Nucleic Acids analysis
- Abstract
The increasing prevalence of antimicrobial resistance is a serious threat to global public health. One of the most concerning trends is the rapid spread of Carbapenemase-Producing Organisms (CPO), where colistin has become the last-resort antibiotic treatment. The emergence of colistin resistance, including the spread of mobilized colistin resistance (mcr) genes, raises the possibility of untreatable bacterial infections and motivates the development of improved diagnostics for the detection of colistin-resistant organisms. This work demonstrates a rapid response for detecting the most recently reported mcr gene, mcr-9, using a portable and affordable lab-on-a-chip (LoC) platform, offering a promising alternative to conventional laboratory-based instruments such as real-time PCR (qPCR). The platform combines semiconductor technology, for non-optical real-time DNA sensing, with a smartphone application for data acquisition, visualization and cloud connectivity. This technology is enabled by using loop-mediated isothermal amplification (LAMP) as the chemistry for targeted DNA detection, by virtue of its high sensitivity, specificity, yield, and manageable temperature requirements. Here, we have developed the first LAMP assay for mcr-9 - showing high sensitivity (down to 100 genomic copies/reaction) and high specificity (no cross-reactivity with other mcr variants). This assay is demonstrated through supporting a hospital investigation where we analyzed nucleic acids extracted from 128 carbapenemase-producing bacteria isolated from clinical and screening samples and found that 41 carried mcr-9 (validated using whole genome sequencing). Average positive detection times were 6.58 ± 0.42 min when performing the experiments on a conventional qPCR instrument (n = 41). For validating the translation of the LAMP assay onto a LoC platform, a subset of the samples were tested (n = 20), showing average detection times of 6.83 ± 0.92 min for positive isolates (n = 14). All experiments detected mcr-9 in under 10 min, and both platforms showed no statistically significant difference (p-value > 0.05). When sample preparation and throughput capabilities are integrated within this LoC platform, the adoption of this technology for the rapid detection and surveillance of antimicrobial resistance genes will decrease the turnaround time for DNA detection and resistotyping, improving diagnostic capabilities, patient outcomes, and the management of infectious diseases.
- Published
- 2020
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178. Effectiveness and safety of polymyxin B for the treatment of infections caused by extensively drug-resistant Gram-negative bacteria in Thailand.
- Author
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Ngamprasertchai T, Boonyasiri A, Charoenpong L, Nimitvilai S, Lorchirachoonkul N, Wattanamongkonsil L, and Thamlikitkul V
- Abstract
Background: Colistimethate sodium (colistin) has been used in the treatment of infections caused by extensively drug-resistant (XDR) Gram-negative bacteria in Thailand over the past decade, with a mortality rate of 50% and a nephrotoxicity rate of 40%. Polymyxin B has not been available in Thailand. We conducted a Phase II clinical study to determine the effectiveness and safety of polymyxin B, compared with colistin, for the treatment of XDR Gram-negative bacterial infections in Thai patients., Methods: A total of 73 adult patients hospitalized at four participating tertiary care hospitals from January 2015 to December 2015 who had infections caused by XDR Gram-negative bacteria and had to receive colistin were enrolled in the study. Polymyxin B (100 mg/day) was administered intravenously every 12 hours for 7-14 days., Results: Most of the patients were older males with comorbidities who had received antibiotics, particularly carbapenems, prior to receiving polymyxin B. More than half of the patients had pneumonia, and 51.5% of the infections were caused by XDR Acinetobacter baumannii , which was susceptible to colistin. Good clinical responses at the end of treatment were observed in 78.1% of cases, the overall 28-day mortality rate from all causes was 28.7%, the microbiological clearance of the targeted bacteria after therapy was 56.2% and nephrotoxicity occurred in 24.7% of cases. Neurotoxicity relating to reversible numbness was observed in two cases., Conclusion: Polymyxin B seems to be effective and safe for the treatment of XDR Gram-negative bacterial infections. Polymyxin B should be considered as an alternative to colistin for treatment of infections caused by XDR Gram-negative bacteria in Thai adult patients, especially those at risk of nephrotoxicity., Competing Interests: Disclosure The authors report no conflicts of interest in this work.
- Published
- 2018
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179. Evaluation of a 12-week lifestyle education intervention with or without partial meal replacement in Thai adults with obesity and metabolic syndrome: a randomised trial.
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Chaiyasoot K, Sarasak R, Pheungruang B, Dawilai S, Pramyothin P, Boonyasiri A, Supapueng O, Jassil FC, Yamwong P, and Batterham RL
- Subjects
- Adult, Body Composition physiology, Female, Humans, Male, Meals, Metabolic Syndrome diet therapy, Obesity diet therapy, Thailand, Treatment Outcome, Body Mass Index, Life Style, Metabolic Syndrome therapy, Obesity therapy, Patient Education as Topic, Weight Loss
- Abstract
Background/objectives: There have been no studies examining the efficacy of meal replacement (MR) on weight loss and metabolic syndrome (MS) improvement in Southeast Asians. Thus, we undertook a 12-week randomised trial to evaluate the effect of a lifestyle education intervention alone (LEI) or with partial MR (LEI + MR) in obese Thai adults with MS., Subjects/methods: A total of 110 patients were randomised to receive either LEI or LEI + MR. Both groups received LEI to achieve weight loss. LEI + MR group additionally received two MR daily to replace either breakfast, lunch or dinner. Mean ± SE body mass index of all participants was 34.6 ± 0.6 kg/m
2 , mean ± SE age was 42.5 ± 1.1 years and 83% of patients were female. Both groups were compared for anthropometric and cardiometabolic indices at 12-week. Body weight was also compared at weeks 38 and 64., Results: At 12 weeks, both groups exhibited statistically significant percentage weight loss (%WL) compared to initial weight but greater %WL was observed in LEI + MR compared to LEI, 2.9% vs. 1.5%, respectively (p < 0.05). MS criteria such as waist circumference and blood pressure improved significantly in both groups compared to baseline. However, improvement in fasting plasma glucose (FPG) was only significant in LEI + MR, and more participants with impaired FPG at baseline in LEI + MR (42.9%) than LEI (19%) returned to normal FPG at 12 weeks (p < 0.05). HbA1c , fasting insulin and HOMA-IR in LEI + MR were significantly lower than with LEI. At the end of the 12-week intervention period, 16% of participants no longer fulfilled MS criteria. A statistically significant weight loss from baseline persisted until 38 weeks but no longer reached statistically significant difference between groups CONCLUSIONS: LEI and LEI + MR were acceptable and led to improvement in weight and MS. LEI + MR group exhibited additional weight reduction and glycemic benefits at 12 weeks.- Published
- 2018
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180. Systematic review of electronic surveillance of infectious diseases with emphasis on antimicrobial resistance surveillance in resource-limited settings.
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Rattanaumpawan P, Boonyasiri A, Vong S, and Thamlikitkul V
- Subjects
- Humans, Population Surveillance, Socioeconomic Factors, Anti-Bacterial Agents pharmacology, Bacterial Infections epidemiology, Bacterial Infections microbiology, Drug Resistance, Bacterial
- Abstract
Background: Electronic surveillance of infectious diseases involves rapidly collecting, collating, and analyzing vast amounts of data from interrelated multiple databases. Although many developed countries have invested in electronic surveillance for infectious diseases, the system still presents a challenge for resource-limited health care settings., Methods: We conducted a systematic review by performing a comprehensive literature search on MEDLINE (January 2000-December 2015) to identify studies relevant to electronic surveillance of infectious diseases. Study characteristics and results were extracted and systematically reviewed by 3 infectious disease physicians., Results: A total of 110 studies were included. Most surveillance systems were developed and implemented in high-income countries; less than one-quarter were conducted in low-or middle-income countries. Information technologies can be used to facilitate the process of obtaining laboratory, clinical, and pharmacologic data for the surveillance of infectious diseases, including antimicrobial resistance (AMR) infections. These novel systems require greater resources; however, we found that using electronic surveillance systems could result in shorter times to detect targeted infectious diseases and improvement of data collection., Conclusions: This study highlights a lack of resources in areas where an effective, rapid surveillance system is most needed. The availability of information technology for the electronic surveillance of infectious diseases, including AMR infections, will facilitate the prevention and containment of such emerging infectious diseases., (Copyright © 2018 Association for Professionals in Infection Control and Epidemiology, Inc. Published by Elsevier Inc. All rights reserved.)
- Published
- 2018
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181. Prevalence of Cutaneous Bacterial Colonization in Thai Patients with Psoriasis.
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Chularojanamontri L, Wongpraparut C, Tuchinda P, Winayanuwattikun W, Boonyasiri A, Kulthanan K, and Thamlikitkul V
- Subjects
- Adult, Female, Humans, Male, Middle Aged, Bacteria classification, Bacteria isolation & purification, Psoriasis epidemiology, Psoriasis microbiology, Skin microbiology
- Abstract
Objective: To determine bacterial colonization of skin, scalp, nares, nails, and psoriasis lesion in Thai psoriasis patients and compare findings with those of healthy controls., Material and Method: Sixty patients with chronic plaque-type psoriasis and 60 healthy controls of similar age and gender were enrolled. Swabs of nares, scalp, nails, and non-lesional skin were taken from all subjects. Swabs of lesional skin were taken from psoriasis patients. Aerobic bacteria were isolated from swab specimens., Results: Patients with psoriasis had significantly higher rate of bacteria colonization in nares, scalp, and nails than those of healthy controls. Firmicutes spp. was the most common phyla, followed by Proteobacteria spp. in both groups. Coagulase-negative staphylococci (CoNS) were the most common pathogens isolated from lesional skin, non-lesional skin, scalp, and nares of psoriasis patients. Streptococcus spp. was found only in psoriasis patients., Conclusion: Similar to findings from Caucasian psoriasis patients, Firmicutes spp. was found to be the most common phyla colonizing the skin of Asian psoriasis patients. Streptococcus spp. was found to colonize only the skin. Further studies are needed to determine the clinical significance of streptococcal skin colonization in psoriasis patients.
- Published
- 2016
182. Epidemiology of Antibiotic Use and Antimicrobial Resistance in Selected Communities in Thailand.
- Author
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Khamsarn S, Nampoonsak Y, Busamaro S, Tangkoskul T, Seenama C, Rattanaumpawan P, Boonyasiri A, and Thamlikitkul V
- Subjects
- Adolescent, Adult, Aged, Child, Child, Preschool, Drug Resistance, Bacterial, Escherichia coli isolation & purification, Feces microbiology, Female, Humans, Infant, Male, Meat microbiology, Middle Aged, Prevalence, Thailand, Young Adult, beta-Lactamases metabolism, Anti-Bacterial Agents therapeutic use, Diarrhea drug therapy, Respiratory Tract Infections drug therapy
- Abstract
Objective: To generate epidemiological information regarding antibiotic use and antimicrobial resistance (AMR) in targeted communities for use by the Thailand AMR Containment and Prevention Program., Material and Method: A survey of antibiotics sold by 215 grocery stores and retail shops located in the target communities was done by the local people who were instructed to purchase specified antibiotics and to present to such stores and shops with symptoms of sore throat, backache, common cold, acute diarrhea, inflamed uterus, and dysuria. The purchased drugs were then identified and recorded. Contamination of extended-spectrum β-lactamase (ESBL)-producing E. coli was identified in 174 samples of foods and open water sources collected from the target communities. Carriage of ESBL-producing E. coli in gastrointestinal tracts of 534 adults living in the target communities was performed by stool sample culture. One thousand three hundred one patients with upper respiratory infection (URI) and 235 patients with acute diarrhea who attended the tambon health promoting hospitals located in the target communities were monitored for their clinical outcomes of treatments. The patients with URI and acute diarrhea with no indication of antibiotic received symptomatic treatments as appropriate and they were followed via telephone contact every few days until all symptoms related to URI and acute diarrhea disappeared. The data were analyzed by descriptive statistics., Results: Antibiotics were sold to the local people who were presenting with common ailments at many grocery stores and retail shops in their respective communities. In almost all cases, antibiotics were inappropriately given. Overall prevalence of ESBL-producing E. coli contamination in foods and open water sources was 26.4%. ESBL-producing E. coli was isolated from fresh meat and open water sources in many samples. Overall prevalence of ESBL-producing E. coli carriage in gastrointestinal tracts of the adults cultured was 66.5%. All patients with URI and acute diarrhea who had no indication of antibiotics and did not receive antibiotics had either cure or favorable response within seven days of start of symptomatic treatment., Conclusion: Antibiotics are widely available and are inappropriately sold and given by grocery stores and retail shops located within local communities in Thailand. Antibiotic-resistant bacteria commonly and freely circulate within the community. Patients with URI and acute diarrhea with no indication for antibiotic therapy can be treated without antibiotics. Findings and observations from this study will be used as part of a social marketing campaign on prevention and containment of AMR to educate people living within communities in Thailand.
- Published
- 2016
183. Effectiveness of Chlorhexidine Wipes for the Prevention of Multidrug-Resistant Bacterial Colonization and Hospital-Acquired Infections in Intensive Care Unit Patients: A Randomized Trial in Thailand.
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Boonyasiri A, Thaisiam P, Permpikul C, Judaeng T, Suiwongsa B, Apiradeewajeset N, Fakthongphan T, Suddee S, Laoagtipparos W, and Thamlikitkul V
- Subjects
- Adult, Aged, Aged, 80 and over, Baths, Drug Resistance, Multiple, Bacterial, Female, Humans, Male, Middle Aged, Soaps, Thailand, Young Adult, Chlorhexidine administration & dosage, Cross Infection prevention & control, Disinfectants administration & dosage, Intensive Care Units
- Abstract
Objective: To determine the effectiveness of daily bathing with 2% chlorhexidine-impregnated washcloths in preventing multidrug-resistant (MDR) gram-positive bacterial colonization and bloodstream infection., Methods: A randomized, open-label controlled trial was conducted in 4 medical intensive care units (ICUs) in Thailand from December 2013 to January 2015. Patients were randomized to receive cleansing with non-antimicrobial soap (control group) or 2% chlorhexidine-impregnated washcloths used to wipe the patient's body once daily (chlorhexidine group). Swabs were taken from nares, axilla, antecubital, groin, and perianal areas on admission and on day 3, 5, 7, and 14. The 5 outcomes were (1) favorable events ( all samples negative throughout ICU admission, or initially positive samples with subsequent negative samples); (2) MDR bacteria colonization-free time; (3) hospital-acquired infection; (4) length of ICU and hospital stay; (5) adverse skin reactions., Results: A total of 481 patients were randomly assigned to the control group (241) or the chlorhexidine group (240). Favorable events at day 14 were observed in 34.8% of patients in the control group and 28.6% in the chlorhexidine group (P=.79). Median MDR bacteria colonization-free times were 5 days in both groups. The incidence rate of hospital-acquired infection and the length of the ICU and hospital stay did not differ significantly between groups. The incidence of adverse skin reactions in the chlorhexidine group was 2.5%., Conclusion: The effectiveness of 2% chlorhexidine-impregnated washcloths for the prevention of MDR gram-negative bacteria colonization and hospital-acquired infection in adult patients in ICU was not proven. TRIAL REGISTRATION ClinicalTrials.gov identifier: NCT01989416.
- Published
- 2016
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184. Oral Candida Colonization in Thai Patients with Psoriasis.
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Chularojanamontri L, Wongpraparut C, Tuchinda P, Winayanuwattikun W, Boonyasiri A, Kulthanan K, and Thamlikitkul V
- Subjects
- Adult, Candida isolation & purification, Candida albicans isolation & purification, Case-Control Studies, Comorbidity, Female, Humans, Male, Middle Aged, Prevalence, Risk Factors, Thailand epidemiology, Candidiasis, Oral epidemiology, Carrier State epidemiology, Psoriasis epidemiology
- Abstract
Objective: To investigate the prevalence and risk factors of oral Candida colonization in psoriatic patients at Siriraj Hospital., Material and Method: Sixty patients with psoriasis, aged older than 18 years, were recruited for the study group. Sixty healthy individuals similar to the patients in the study group in terms of age and gender were recruited for the control group. Candida spp. was isolated from oral swabs and oral rinses taken from all subjects., Results: During the study period, 27 (45.0%) psoriatic patients used only topical treatment and the remaining patients were on systemic treatment. Oral Candida colonization was significantly higher in patients with psoriasis (30%), as compared with healthy controls (13.3%). Candida albicans was the predominant Candida species isolated. Presence of oral candidiasis was significantly associated with systemic treatment., Conclusion: Oral Candida colonization is associated with psoriasis, especially in patients who receive systemic treatment.
- Published
- 2016
185. Bacterial contamination of fresh traumatic wounds at Trauma Center, Siriraj Hospital, Bangkok, Thailand.
- Author
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Sirijatuphat R, Siritongtaworn P, Sripojtham V, Boonyasiri A, and Thamlikitkul V
- Subjects
- Adult, Aged, Aged, 80 and over, Antibiotic Prophylaxis, Female, Humans, Male, Middle Aged, Prospective Studies, Thailand epidemiology, Trauma Centers, Wound Infection prevention & control, Young Adult, Wound Infection epidemiology, Wounds and Injuries microbiology
- Abstract
Background: Fresh traumatic wound is a common health problem in patients attending Trauma Center at Siriraj Hospital in Bangkok, Thailand. Antibiotic prophylaxis was given to nearly 90% of such patients. A contributing factor to a high prevalence of antibiotic prophylaxis is a lack of data on bacterial contamination at fresh traumatic wounds in Thai patients., Objective: To determine prevalence and characters of bacterial contamination, and incidence of wound infection in adult patients with fresh traumatic wounds attending Siriraj Trauma Center., Material and Method: Prospective study was conducted in 330 adult patients with fresh traumatic wounds from March 2012 and September 2012. All patients received wound care and antibiotic prophylaxis according to the judgment of their responsible physicians. A wound swab culture was taken from all patients. The patients were either called by telephone or asked to have follow-up visits in order to determine incidence of wound infection. The infected patient received regular care., Results: Sixty-three percent and 8% of the patients had lacerated wounds and bite wounds, respectively. Ninety-one percent of them received antibiotics of which dicloxacillin and co-amoxiclav accounted for 80.3% and 11.4%, respectively. Wound swab cultures revealed that potential pathogenic bacteria i.e. S. aureus, streptococci, Enterobacteriaceae, Aeromonas spp., Acinetobacter spp. and non-fermentative gram-negative rods (NF GNR) were recovered from 7% of wounds. Incidence of wound infection was 1.2%, and all infected wounds were found in patients who had a contaminated wound and received antibiotic prophylaxis. Bacterial contaminations of infected patients were NF GNR, E. cloacae, and mixed organisms. All wound infections were successfully treated with appropriate wound care., Conclusion: More than 90% of adult patients with fresh traumatic wound at Siriraj Trauma Center received prophylactic antibiotics. Less than 10% of these wounds were contaminated with potentially pathogenic bacteria. Incidence of wound infection in fresh traumatic wounds was low.
- Published
- 2014
186. Effectiveness of multifaceted interventions on rational use of antibiotics for patients with upper respiratory tract infections and acute diarrhea.
- Author
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Boonyasiri A and Thamlikitkul V
- Subjects
- Acute Disease, Ambulatory Care, Feces microbiology, Humans, Pharynx microbiology, Anti-Bacterial Agents therapeutic use, Diarrhea drug therapy, Inappropriate Prescribing prevention & control, Practice Patterns, Physicians' statistics & numerical data, Respiratory Tract Infections drug therapy
- Abstract
Objective: To implement multifaceted interventions to promote rational use of antibiotics for out-patients with upper respiratory tract infection (URI) and acute diarrhea., Material and Method: The present study was conducted at ambulatory care facility for patients under Social Security Healthcare Benefit Scheme and Universal Health Coverage Scheme of Siriraj Hospital from January to April 2012. Multifaceted interventions were: Training responsible healthcare personnel on rational use of antibiotics, Clinical practice guidelines, Preprinted medical record forms for patients, Throat swab or stool culture to be taken from the patients (if responsible physicians needed these); and provision of brochures containing causes, necessity and harm of antibiotics for URI and acute diarrhea to patients as well as their relatives while waiting for receiving care. Pre-printed medical records were collected every day. Each patient was called on day 3 after receiving care by an investigator to determine clinical responses., Results: There were 1,241 episodes of URI and 210 episodes of acute diarrhea during the study period. Rates of antibiotic prescriptions were 13.0% for URI and 19.1% for acute diarrhea. Throat swab cultures recovered group A beta-hemolytic streptococci in 3.8% of URI patients and non-typhoidal Salmonella spp. in 14.6% of acute diarrhea patients. Clinical responses of the patients on day 3 after receiving care revealed that more than 97% of the patients who received antibiotics and who did not receive antibiotics were cured or improved., Conclusion: Multifaceted interventions are very effective for promoting rational use of antibiotics for out-patients with URI and acute diarrhea at Siriraj Hospital.
- Published
- 2014
187. Candidemia in Siriraj Hospital: epidemiology and factors associated with mortality.
- Author
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Boonyasiri A, Jearanaisilavong J, and Assanasen S
- Subjects
- Aged, Candidemia mortality, Female, Hospitals, Humans, Male, Retrospective Studies, Risk Factors, Thailand, Candidemia epidemiology
- Abstract
Objective: To study the epidemiology of candidemia and to identify risk factors for mortality among adult patients, Material and Method: Retrospective analysis of patients with candidemia in a 2400-bed tertiary-care university hospital in Bangkok, Thailand from June 2006 to May 2009., Results: During the study period, 147 patients (50% male) with clinically significant candidemia were identified, with a mean age of 61 years. The underlying conditions included renal failure (47%), abdominal surgery within 30 days (31%), diabetes (27%), hematologic malignancies (25%), solid malignancies (25%), neutropenia (23%), and liver disease (11%). Nearly all patients (98%) received antibacterial therapy within 30 days. The four most common Candida species were C. albicans (39%), C. tropicalis (28%), C. glabrata (22%) and C. parapsilosis (6%). Only sixty-nine patients (47%) received appropriate antifungal therapy within 72 hours. The 28-day all-cause mortality was 59%. By multivariate analysis, the independent risk factors associated with mortality were neutropenia from chemotherapy OR = 9.12 (2.94-28.31), septic shock OR = 3.66 (1.54-8.66), ICU admission OR = 3.18 (1.27-7.92), inappropriate antifungal therapy within 72 hours OR = 2.38 (1.07-5.28) and renal failure OR = 2.34 (1.07-5.13)., Conclusion: Adult patients with candidemia had a high mortality rate particularly those receiving an inappropriate antifungal therapy. Empirical antifungal therapy should be considered in selected patients on the basis of underlying conditions, severity of illness and risk factors for mortality.
- Published
- 2013
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