5 results on '"Town, K."'
Search Results
2. Phylogenomic analysis of Neisseria gonorrhoeae transmission to assess sexual mixing and HIV transmission risk in England: a cross-sectional, observational, whole-genome sequencing study.
- Author
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Town K, Field N, Harris SR, Sánchez-Busó L, Cole MJ, Pitt R, Fifer H, Mohammed H, and Hughes G
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- Adult, Cross-Sectional Studies, England epidemiology, Female, Gonorrhea microbiology, Heterosexuality statistics & numerical data, Homosexuality, Male statistics & numerical data, Humans, Male, Sexual Partners, Young Adult, Gonorrhea epidemiology, Gonorrhea transmission, HIV Infections epidemiology, HIV Infections transmission, Neisseria gonorrhoeae classification, Neisseria gonorrhoeae genetics, Phylogeny, Whole Genome Sequencing
- Abstract
Background: Characterising sexual networks with transmission of sexually transmitted infections might allow identification of individuals at increased risk of infection. We aimed to investigate sexual mixing in Neisseria gonorrhoeae transmission networks between women, heterosexual men, and men who report sex with men (MSM), and between people with and without HIV., Methods: In this cross-sectional observational study, we whole-genome sequenced N gonorrhoeae isolates from the archive of the Gonococcal Resistance to Antimicrobials Surveillance Programme (GRASP).w Isolates that varied by five single nucleotide polymorphisms or fewer were grouped into clusters that represented sexual networks with N gonorrhoeae transmission. Clusters were described by gender, sexual risk group, and HIV status., Findings: We sequenced 1277 N gonorrhoeae isolates with linked clinical and sociodemographic data that were collected in five clinics in England during 2013-16 (July 1 to Sept 30 in 2013-15; July 1 to Sept 9 in 2016). The isolates grouped into 213 clusters. 30 (14%) clusters contained isolates from heterosexual men and MSM but no women and three (1%) clusters contained isolates from only women and MSM. 146 (69%) clusters comprised solely people with negative or unknown HIV status and seven (3%) comprised only HIV-positive people. 60 (28%) clusters comprised MSM with positive and negative or unknown HIV status., Interpretation: N gonorrhoeae molecular data can provide information indicating risk of HIV or other sexually transmitted infections for some individuals for whom such risk might not be known from clinical history. These findings have implications for sexual health care, including offering testing, prevention advice, and preventive treatment, such as HIV pre-exposure prophylaxis., Funding: National Institute for Health Research Health Protection Research Unit; Wellcome; Public Health England., (Copyright © 2020 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY-NC-ND 4.0 license. Published by Elsevier Ltd.. All rights reserved.)
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- 2020
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3. Linkage to HIV care following diagnosis in the WHO European Region: A systematic review and meta-analysis, 2006-2017.
- Author
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Croxford S, Yin Z, Burns F, Copas A, Town K, Desai S, Skingsley A, and Delpech V
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- Europe, HIV Infections diagnosis, Humans, World Health Organization, HIV Infections therapy, Time-to-Treatment
- Abstract
Background: Timely linkage to care after HIV diagnosis is crucial as delayed access can result in poor patient outcomes. The aim of this systematic review was to synthesise the evidence to achieve a better understanding of what proportion of patients are linked to care and what factors impact linkage., Methods: Systematic searches were run in six databases up to the end of February 2017. The grey literature was also reviewed. Inclusion criteria were: sample size ≥50 people (aged ≥15), from the WHO European Region, published 2006-2017 and in English. Linkage to care was defined as a patient seen for HIV care after diagnosis. Study selection, data extraction and quality assurance were performed by two independent reviewers. Random-effects meta-analysis was carried out to summarise linkage to care within three months of diagnosis., Results: Twenty-four studies were included; 22 presented linkage to care data and seven examined factors for linkage. Linkage among 89,006 people in 19 countries was captured. Meta-analysis, restricted to 12 studies and measuring prompt linkage within three months, gave a pooled estimate of 85% (95% CI: 75%-93%). Prompt linkage was higher in studies including only people in care (94%; 95% CI: 91%-97%) than in those of all new diagnoses (71%; 95% CI: 50%-87%). Heterogeneity was high across and within strata (>99%). Factors associated with delaying or not linking to care included: acquiring HIV through heterosexual contact/injecting drug use, younger age at diagnosis, lower levels of education, feeling well at diagnosis and diagnosis outside an STI clinic., Conclusion: Overall, linkage to care was high, though estimates were lower in studies with a high proportion of people who inject drugs. The high heterogeneity between studies made it challenging to synthesise findings. Studies should adopt a standardised definition with a three month cut-off to measure prompt linkage to care to ensure comparability.
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- 2018
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4. Chlamydia and HIV testing, contraception advice, and free condoms offered in general practice: a qualitative interview study of young adults' perceptions of this initiative.
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Jones LF, Ricketts E, Town K, Rugman C, Lecky D, Folkard K, Nardone A, Hartney TN, and McNulty C
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- Adolescent, Condoms, Contraception methods, Delivery of Health Care standards, England, Female, Humans, Interviews as Topic, Male, Mass Screening, Program Evaluation, Qualitative Research, Young Adult, Chlamydia Infections diagnosis, Chlamydia Infections prevention & control, General Practice, HIV Infections diagnosis, HIV Infections prevention & control, Patient Preference statistics & numerical data, Reproductive Health Services standards, Reproductive Health Services trends, Sex Education standards
- Abstract
Background: Opportunistic chlamydia screening is actively encouraged in English general practices. Based on recent policy changes, Public Health England piloted 3Cs and HIV in 2013-2014, integrating the offer of chlamydia testing with providing condoms, contraceptive information, and HIV testing (referred to as 3Cs and HIV) according to national guidelines., Aim: To determine young adults' opinions of receiving a broader sexual health offer of 3Cs and HIV at their GP practice., Design and Setting: Qualitative interviews were conducted in a general practice setting in England between March and June 2013., Method: Thirty interviews were conducted with nine male and 21 female patients aged 16-24 years, immediately before or after a routine practice attendance. Data were transcribed verbatim and analysed using a thematic framework., Results: Participants indicated that the method of testing, timing, and the way the staff member approached the topic were important aspects to patients being offered 3Cs and HIV. Participants displayed a clear preference for 3Cs and HIV to be offered at the GP practice over other sexual health service providers. Participants highlighted convenience of the practice, assurance of confidentiality, and that the sexual health discussion was appropriate and routine. Barriers identified for patients were embarrassment, unease, lack of time, religion, and patients believing that certain patients could take offence. Suggested facilitators include raising awareness, reassuring confidentiality, and ensuring the offer is made in a professional and non-judgemental way at the end of the consultation., Conclusion: General practice staff should facilitate patients' preferences by ensuring that 3Cs and HIV testing services are made available at their surgery and offered to appropriate patients in a non-judgemental way., (© British Journal of General Practice 2017.)
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- 2017
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5. Uptake of Home-Based HIV Testing, Linkage to Care, and Community Attitudes about ART in Rural KwaZulu-Natal, South Africa: Descriptive Results from the First Phase of the ANRS 12249 TasP Cluster-Randomised Trial
- Author
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Edet B, Bonilla-Escobar Fj, Creanga Aa, François Dabis, Claire Rekacewicz, Uduak Okomo, Collins Iwuji, Tiggelaar Sm, Charlton Bm, Anthony Nardone, Adelufosi A, Aquaisua E, Marie-Louise Newell, Esu E, Joanna Orne-Gliemann, Kuhlmann Aks, Ejemot-Nwadiaro R, Ellie J Ricketts, Frank Tanser, Zhao H, Jones Lf, Joseph Larmarange, Cam McNulty, Rodolphe Thiébaut, Town K, Wu E, Rugman C, Ogugbue M, Msiska Tw, Gullo S, Jiang T, Thomas Hartney, Kate Folkard, Bello S, M Chibuzor, Nonhlanhla Okesola, Ortega-Loubon C, Galavotti C, Donna M. Lecky, Borus J, Wu R, Ortega-Lenis D, Xu F, Rojas-Mirquez Jc, Iwara Arikpo, Martin M Meremikwu, Dachi Arikpo, Okoye I, Vargas G, DARMIGNY, Sandrine, Research Department of Infection and Population Health [London], University College of London [London] (UCL), Africa Centre for Health and Population Studies, University of KwaZulu-Natal [Durban, Afrique du Sud] (UKZN)-Medical Research Council of South Africa, Institut de Santé Publique, d'Epidémiologie et de Développement (ISPED), Université Bordeaux Segalen - Bordeaux 2, Bordeaux population health (BPH), Université de Bordeaux (UB)-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre population et développement (CEPED - UMR_D 196), Institut de Recherche pour le Développement (IRD)-Université Paris Cité (UPCité), University of KwaZulu-Natal [Durban, Afrique du Sud] (UKZN), Agence Nationale de Recherches sur le Sida et les Hépatites Virales (ANRS), Human Health and Development, University of Southampton, University of KwaZulu-Natal (UKZN)-Medical Research Council of South Africa, Institut de Recherche pour le Développement (IRD)-Université Paris Descartes - Paris 5 (UPD5), Epidémiologie et Biostatistique [Bordeaux], Université Bordeaux Segalen - Bordeaux 2-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale (INSERM), Agence nationale de recherches sur le sida et les hépatites virales, ANRS France Recherche Nord & sud Sida-hiv hépatites, Global Health Research Institute, Hopkins Marine Station [Stanford], Stanford University, University College of London [London] ( UCL ), University of KwaZulu-Natal ( UKZN ) -Medical Research Council of South Africa, Institut de Santé Publique, d'Epidémiologie et de Développement ( ISPED ), Centre population et développement ( CEPED - UMR_D 196 ), Institut de Recherche pour le Développement ( IRD ) -Université Paris Descartes - Paris 5 ( UPD5 ), Université Bordeaux Segalen - Bordeaux 2-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale ( INSERM ), ANRS, University of Southampton [Southampton], HOPKINS MARINE STATION, Stanford University [Stanford], 12249, The French National Agency for Aids and Viral Hepatitis Research (ANRS), 81151938, Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, International Initiative for Impact Evaluation, Merck, Gilead Sciences, and 097410/Z/11/Z, Wellcome Trust
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RNA viruses ,Questionnaires ,Male ,Rural Population ,0301 basic medicine ,Epidemiology ,[SDV]Life Sciences [q-bio] ,lcsh:Medicine ,HIV Infections ,Human sexuality ,Pathology and Laboratory Medicine ,Public opinion ,Geographical locations ,South Africa ,0302 clinical medicine ,Immunodeficiency Viruses ,Health care ,Medicine and Health Sciences ,Medicine ,Public and Occupational Health ,030212 general & internal medicine ,ComputingMilieux_MISCELLANEOUS ,media_common ,education.field_of_study ,AIDS Serodiagnosis ,virus diseases ,HIV diagnosis and management ,[ SDV.SPEE ] Life Sciences [q-bio]/Santé publique et épidémiologie ,General Medicine ,Continuity of Patient Care ,Middle Aged ,Vaccination and Immunization ,3. Good health ,Abortion law ,[SDV] Life Sciences [q-bio] ,Sexual Partners ,Medical Microbiology ,Research Design ,HIV epidemiology ,Viral Pathogens ,Viruses ,Cluster Trials ,Female ,Health education ,Pathogens ,Attitude to Health ,Research Article ,Adult ,Drug Research and Development ,Anti-HIV Agents ,media_common.quotation_subject ,Immunology ,HIV prevention ,Population ,Antiretroviral Therapy ,Research and Analysis Methods ,Microbiology ,Young Adult ,03 medical and health sciences ,Antiviral Therapy ,Nursing ,Retroviruses ,Humans ,Clinical Trials ,education ,Microbial Pathogens ,Conscience ,Pharmacology ,Survey Research ,[ SDV ] Life Sciences [q-bio] ,business.industry ,Lentivirus ,lcsh:R ,Organisms ,Biology and Life Sciences ,HIV ,030112 virology ,Mental health ,Diagnostic medicine ,Self Care ,[SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie ,Law ,Africa ,[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie ,Preventive Medicine ,Clinical Medicine ,People and places ,business - Abstract
Background The 2015 WHO recommendation of antiretroviral therapy (ART) for all immediately following HIV diagnosis is partially based on the anticipated impact on HIV incidence in the surrounding population. We investigated this approach in a cluster-randomised trial in a high HIV prevalence setting in rural KwaZulu-Natal. We present findings from the first phase of the trial and report on uptake of home-based HIV testing, linkage to care, uptake of ART, and community attitudes about ART. Methods and Findings Between 9 March 2012 and 22 May 2014, five clusters in the intervention arm (immediate ART offered to all HIV-positive adults) and five clusters in the control arm (ART offered according to national guidelines, i.e., CD4 count ≤ 350 cells/μl) contributed to the first phase of the trial. Households were visited every 6 mo. Following informed consent and administration of a study questionnaire, each resident adult (≥16 y) was asked for a finger-prick blood sample, which was used to estimate HIV prevalence, and offered a rapid HIV test using a serial HIV testing algorithm. All HIV-positive adults were referred to the trial clinic in their cluster. Those not linked to care 3 mo after identification were contacted by a linkage-to-care team. Study procedures were not blinded. In all, 12,894 adults were registered as eligible for participation (5,790 in intervention arm; 7,104 in control arm), of whom 9,927 (77.0%) were contacted at least once during household visits. HIV status was ever ascertained for a total of 8,233/9,927 (82.9%), including 2,569 ascertained as HIV-positive (942 tested HIV-positive and 1,627 reported a known HIV-positive status). Of the 1,177 HIV-positive individuals not previously in care and followed for at least 6 mo in the trial, 559 (47.5%) visited their cluster trial clinic within 6 mo. In the intervention arm, 89% (194/218) initiated ART within 3 mo of their first clinic visit. In the control arm, 42.3% (83/196) had a CD4 count ≤ 350 cells/μl at first visit, of whom 92.8% initiated ART within 3 mo. Regarding attitudes about ART, 93% (8,802/9,460) of participants agreed with the statement that they would want to start ART as soon as possible if HIV-positive. Estimated baseline HIV prevalence was 30.5% (2,028/6,656) (95% CI 25.0%, 37.0%). HIV prevalence, uptake of home-based HIV testing, linkage to care within 6 mo, and initiation of ART within 3 mo in those with CD4 count ≤ 350 cells/μl did not differ significantly between the intervention and control clusters. Selection bias related to noncontact could not be entirely excluded. Conclusions Home-based HIV testing was well received in this rural population, although men were less easily contactable at home; immediate ART was acceptable, with good viral suppression and retention. However, only about half of HIV-positive people accessed care within 6 mo of being identified, with nearly two-thirds accessing care by 12 mo. The observed delay in linkage to care would limit the individual and public health ART benefits of universal testing and treatment in this population. Trial registration ClinicalTrials.gov NCT01509508, Collins Iwuji and colleagues report implementation indicators and early health outcomes from the first phase of a cluster-randomized trial of immediate antiretroviral therapy to all HIV-positive individuals in rural KwaZulu-Natal, South Africa., Author Summary Why Was This Study Done? A study in stable sexual partners in which one partner was HIV-positive and the other partner was HIV-negative (and both partners had disclosed to each other) showed that if the HIV-positive partner was on antiretroviral therapy, there was a 96% reduction in HIV transmission from the HIV-positive partner to the HIV-negative partner. However, we do not know if antiretroviral therapy prescribed to HIV-positive individuals in the general population—and where individuals might not disclose their HIV status to sexual partners—would have a similar impact on HIV transmission. It is important to determine whether prescribing antiretroviral therapy to all HIV-positive individuals is more effective at decreasing HIV transmission than starting individuals on antiretroviral therapy only once their HIV has progressed to the point at which local HIV treatment guidelines currently recommend that HIV-positive individuals start treatment. What Did the Researchers Do and Find? We designed an experiment to investigate whether antiretroviral therapy can reduce new HIV infections in the general population, and piloted the trial in ten communities in KwaZulu-Natal, South Africa, to check whether starting HIV-positive individuals on antiretroviral therapy directly after diagnosis is feasible and acceptable. We visited people in their homes, offered HIV rapid tests every six months to all individuals 16 years and older, and referred identified HIV-positive individuals to trial clinics, where they were offered antiretroviral therapy either regardless of their CD4 count (intervention group) or when they were treatment-eligible per current national guidelines (control group). During the two-year study, we contacted 9,927 (77%) of 12,894 eligible individuals and ascertained the HIV status of 80% of contacted women and 75% of contacted men. HIV-positive status was ascertained for 1,339 adults who were not previously in care; 1,177 were followed in the trial at least 6 mo after referral, of whom 559 (47.5%) engaged with care within this period. What Do These Findings Mean? Our findings show good acceptance of home-based HIV testing in rural South Africa but highlight the challenges in reaching adequate numbers of people to offer HIV tests to, especially among men. We also found that linkage to care was slower than expected, but amongst those who reached the clinics, uptake of antiretroviral therapy was high, with the majority of individuals achieving good control of the virus. Our study informs health care professionals, planners, and policy makers about the challenges that need to be addressed to achieve the UNAIDS target of 90% of people living with HIV aware of their HIV diagnosis, 90% on antiretroviral therapy, and 90% achieving good control of the virus, with testing and treatment offered to all.
- Published
- 2016
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