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Korenromp EL, Sabin K, Stover J, Brown T, Johnson LF, Martin-Hughes R, ten Brink D, Teng Y, Stevens O, Silhol R, Arias-Garcia S, Kimani J, Glaubius R, Vickerman P, Mahy M. New HIV Infections Among Key Populations and Their Partners in 2010 and 2022, by World Region: A Multisources Estimation. J Acquir Immune Defic Syndr 2024; 95:e34-e45. [PMID: 38180737 PMCID: PMC10769164 DOI: 10.1097/qai.0000000000003340] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
BACKGROUND Previously, The Joint United Nations Programme on HIV/AIDS estimated proportions of adult new HIV infections among key populations (KPs) in the last calendar year, globally and in 8 regions. We refined and updated these, for 2010 and 2022, using country-level trend models informed by national data. METHODS Infections among 15-49 year olds were estimated for sex workers (SWs), male clients of female SW, men who have sex with men (MSM), people who inject drugs (PWID), transgender women (TGW), and non-KP sex partners of these groups. Transmission models used were Goals (71 countries), AIDS Epidemic Model (13 Asian countries), Optima (9 European and Central Asian countries), and Thembisa (South Africa). Statistical Estimation and Projection Package fits were used for 15 countries. For 40 countries, new infections in 1 or more KPs were approximated from first-time diagnoses by the mode of transmission. Infection proportions among nonclient partners came from Goals, Optima, AIDS Epidemic Model, and Thembisa. For remaining countries and groups not represented in models, median proportions by KP were extrapolated from countries modeled within the same region. RESULTS Across 172 countries, estimated proportions of new adult infections in 2010 and 2022 were both 7.7% for SW, 11% and 20% for MSM, 0.72% and 1.1% for TGW, 6.8% and 8.0% for PWID, 12% and 10% for clients, and 5.3% and 8.2% for nonclient partners. In sub-Saharan Africa, proportions of new HIV infections decreased among SW, clients, and non-KP partners but increased for PWID; elsewhere these groups' 2010-to-2022 differences were opposite. For MSM and TGW, the proportions increased across all regions. CONCLUSIONS KPs continue to have disproportionately high HIV incidence.
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Affiliation(s)
- Eline L. Korenromp
- Data for Impact Department, The Joint United Nations Program on HIV/AIDS (UNAIDS), Geneva, Switzerland
| | - Keith Sabin
- Data for Impact Department, The Joint United Nations Program on HIV/AIDS (UNAIDS), Geneva, Switzerland
| | - John Stover
- Center for Modeling, Planning and Policy Analysis, Avenir Health, Glastonbury, CT
| | - Tim Brown
- Research Program, East-West Center, Honolulu, HI
| | - Leigh F. Johnson
- Centre for Infectious Disease Epidemiology and Research, University of Cape Town, Cape Town, South Africa
| | - Rowan Martin-Hughes
- Macfarlane Burnet Institute for Medical Research and Public Health, Melbourne, Australia
| | - Debra ten Brink
- Macfarlane Burnet Institute for Medical Research and Public Health, Melbourne, Australia
| | - Yu Teng
- Center for Modeling, Planning and Policy Analysis, Avenir Health, Glastonbury, CT
| | - Oliver Stevens
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, United Kingdom
| | - Romain Silhol
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, United Kingdom
- HIV Prevention Trials Network Modelling Centre, Imperial College London, London, United Kingdom
| | - Sonia Arias-Garcia
- Data for Impact Department, The Joint United Nations Program on HIV/AIDS (UNAIDS), Geneva, Switzerland
| | - Joshua Kimani
- Partners for Health and Development in Africa, Nairobi, Kenya
- University of Nairobi, Nairobi, Kenya; and
| | - Robert Glaubius
- Center for Modeling, Planning and Policy Analysis, Avenir Health, Glastonbury, CT
| | - Peter Vickerman
- Population Health Sciences, University of Bristol, Bristol, United Kingdom
| | - Mary Mahy
- Data for Impact Department, The Joint United Nations Program on HIV/AIDS (UNAIDS), Geneva, Switzerland
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Matlapeng KM, Babatunde GB, Gwelo NB, Akintola O. Accessing HIV services in Botswana: perspectives of men who have sex with men and other stakeholders. Glob Health Action 2023; 16:2262197. [PMID: 37830348 PMCID: PMC10578085 DOI: 10.1080/16549716.2023.2262197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 09/19/2023] [Indexed: 10/14/2023] Open
Abstract
BACKGROUND Men who have sex with men (MSM) represent an increasing number of new HIV infections in Botswana. Many in Botswana still hold discriminatory views against people who engage in same-sex practices. While it is well documented that stigma and discrimination undermine efforts to prevent HIV, the literature about the perception and experiences of discrimination against MSM in accessing HIV services in Botswana is scant. OBJECTIVE(S) In this study, we sought to explore the perception and experiences of discrimination against MSM to improve access to HIV services and reduce discrimination against this marginalised population. METHODS We employed a descriptive qualitative design using purposive sampling to recruit 20 MSM and 12 stakeholders (six policy-makers and six service providers) involved in implementing HIV/AIDS interventions in Botswana. We conducted semi-structured interviews with participants. All data were audio-recorded, transcribed, translated into English and analysed using thematic analysis. RESULTS The findings of this study show that MSM experience discrimination at the policy, healthcare system and community levels, which undermines their ability to seek HIV services. The participants reported that MSM are excluded from HIV policies and targeted HIV services. They reported a scarcity of trained personnel, poor access to HIV information, condoms, lack of treatment services targeted at MSM and negative attitudes directed towards MSM by service providers and other users. The participants also reported that they are excluded from community interventions and experience negative attitudes from community and family members. CONCLUSION Discrimination against MSM undermines the ability of HIV interventions to address MSM sexual health needs. The findings indicate the importance of enabling MSM to overcome discrimination to seek HIV services. Also, there is a need to further explore discrimination against MSM by service providers within the healthcare settings and ways to improve their understanding of male same-sex practices.
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Affiliation(s)
- Kgosiekae Maxwell Matlapeng
- School of Public Health, University of Western Cape, Cape Town, South Africa
- Public Health Science Department, Institute of Health Sciences, Serowe, Botswana
| | - Gbotemi Bukola Babatunde
- School of Public Health, University of Western Cape, Cape Town, South Africa
- Graduate School of Professional Psychology, University of Denver, Denver, CO, USA
| | - Netsai Bianca Gwelo
- School of Public Health, University of Western Cape, Cape Town, South Africa
| | - Olagoke Akintola
- School of Public Health, University of Western Cape, Cape Town, South Africa
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Aung SWKH, Kingston H, Mbogo LW, Sambai B, Monroe-Wise A, Ludwig-Barron NT, Bukusi D, Sinkele W, Gitau E, Masyuko S, Herbeck JT, Farquhar C, Guthrie BL. Prevalence and correlates of violence among sexual and injecting partners of people who inject drugs living with HIV in Kenya: a cross-sectional study. Harm Reduct J 2023; 20:164. [PMID: 37919736 PMCID: PMC10623850 DOI: 10.1186/s12954-023-00895-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 10/23/2023] [Indexed: 11/04/2023] Open
Abstract
BACKGROUND In Kenya, violence is common among people who inject drugs (PWID) living with HIV and their sexual and injecting partners and may lead to decreased uptake of HIV services, increased HIV risk behaviors, and increased HIV transmission. Violence is defined as any physical harm, threatened harm, or forced sexual acts inflicted on a person in the past year. Understanding the nature of violence and its correlates among PWID and their partners will inform population-specific public health interventions and policy recommendations. METHODS This is a cross-sectional study nested in a prospective cohort study conducted in eight public health centers, methadone clinics, and needle syringe programs in Nairobi, Kilifi, and Mombasa counties in Kenya. 3,302 sexual and/or injecting partners of PWID living with HIV were recruited through assisted partner services and participated in the study. Prevalence and correlates of violence were identified using the Wald test and negative binomial regression. RESULTS Out of 3302 study participants, 1439 (44%) had experienced violence within the past year. Physical violence was the most common form of violence experienced (35%), followed by being threatened (23%) or subjected to sexual violence (7%). In an adjusted analysis, female participants reported higher experiences of sexual violence (prevalence ratio [PR] = 2.46; 95% confidence interval [CI] 1.62, 3.74; p < 0.001) compared to male participants. In adjusted analysis, coastal residents had a higher experience of overall violence (PR = 1.48; 95% CI 1.27, 1.72; p < 0.001) than those living in Nairobi. This regional effect was relatively stronger among the female respondents (pinteraction = 0.025). Participants' sex modified the association between region and experiencing violence after adjusting potential confounding factors. CONCLUSIONS The study reveals the prevalence of violence among PWID and identifies high-risk sub-groups, including women, specifically for sexual violence, and coastal residents. Tailored interventions addressing their unique needs are essential. A holistic approach that combines violence prevention and response, comprehensive harm reduction, healthcare access, and community support is crucial to address the complex issue of drug use and HIV burden among PWID in Kenya for improved health outcomes.
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Affiliation(s)
| | | | - Loice W Mbogo
- University of Washington Global Assistance Program-Kenya, Nairobi, Kenya
| | - Betsy Sambai
- University of Washington Global Assistance Program-Kenya, Nairobi, Kenya
| | | | | | | | - William Sinkele
- Support for Addiction Prevention and Treatment in Africa (SAPTA), Nairobi, Kenya
| | - Esther Gitau
- Support for Addiction Prevention and Treatment in Africa (SAPTA), Nairobi, Kenya
| | - Sarah Masyuko
- University of Washington, Seattle, WA, USA
- National AIDS and STI Control Programme (NASCOP), Kenya Ministry of Health, Nairobi, Kenya
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Nduva GM, Otieno F, Kimani J, McKinnon LR, Cholette F, Sandstrom P, Graham SM, Price MA, Smith AD, Bailey RC, Hassan AS, Esbjörnsson J, Sanders EJ. Phylogeographic Assessment Reveals Geographic Sources of HIV-1 Dissemination Among Men Who Have Sex With Men in Kenya. Front Microbiol 2022; 13:843330. [PMID: 35356525 PMCID: PMC8959701 DOI: 10.3389/fmicb.2022.843330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Accepted: 01/19/2022] [Indexed: 12/14/2022] Open
Abstract
HIV-1 transmission dynamics involving men who have sex with men (MSM) in Africa are not well understood. We investigated the rates of HIV-1 transmission between MSM across three regions in Kenya: Coast, Nairobi, and Nyanza. We analyzed 372 HIV-1 partial pol sequences sampled during 2006-2019 from MSM in Coast (N = 178, 47.9%), Nairobi (N = 137, 36.8%), and Nyanza (N = 57, 15.3%) provinces in Kenya. Maximum-likelihood (ML) phylogenetics and Bayesian inference were used to determine HIV-1 clusters, evolutionary dynamics, and virus migration rates between geographic regions. HIV-1 sub-subtype A1 (72.0%) was most common followed by subtype D (11.0%), unique recombinant forms (8.9%), subtype C (5.9%), CRF 21A2D (0.8%), subtype G (0.8%), CRF 16A2D (0.3%), and subtype B (0.3%). Forty-six clusters (size range 2-20 sequences) were found-half (50.0%) of which had evidence of extensive HIV-1 mixing among different provinces. Data revealed an exponential increase in infections among MSM during the early-to-mid 2000s and stable or decreasing transmission dynamics in recent years (2017-2019). Phylogeographic inference showed significant (Bayes factor, BF > 3) HIV-1 dissemination from Coast to Nairobi and Nyanza provinces, and from Nairobi to Nyanza province. Strengthening HIV-1 prevention programs to MSM in geographic locations with higher HIV-1 prevalence among MSM (such as Coast and Nairobi) may reduce HIV-1 incidence among MSM in Kenya.
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Affiliation(s)
- George M. Nduva
- Department of Translational Medicine, Lund University, Lund, Sweden
- Kenya Medical Research Institute-Wellcome Trust Research Programme, Kilifi, Kenya
| | | | - Joshua Kimani
- Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
| | - Lyle R. McKinnon
- Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
| | - Francois Cholette
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
- National Microbiology Laboratory at the JC Wilt Infectious Diseases Research Centre, Public Health Agency of Canada, Winnipeg, MB, Canada
| | - Paul Sandstrom
- National Microbiology Laboratory at the JC Wilt Infectious Diseases Research Centre, Public Health Agency of Canada, Winnipeg, MB, Canada
| | - Susan M. Graham
- Kenya Medical Research Institute-Wellcome Trust Research Programme, Kilifi, Kenya
- Department of Epidemiology, University of Washington, Seattle, WA, United States
| | - Matt A. Price
- IAVI, San Francisco, CA, United States
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, United States
| | - Adrian D. Smith
- Nuffield Department of Medicine, The University of Oxford, Oxford, United Kingdom
| | - Robert C. Bailey
- Nyanza Reproductive Health Society, Kisumu, Kenya
- Division of Epidemiology and Biostatistics, University of Illinois Chicago, Chicago, IL, United States
| | - Amin S. Hassan
- Department of Translational Medicine, Lund University, Lund, Sweden
- Kenya Medical Research Institute-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Joakim Esbjörnsson
- Department of Translational Medicine, Lund University, Lund, Sweden
- Nuffield Department of Medicine, The University of Oxford, Oxford, United Kingdom
| | - Eduard J. Sanders
- Kenya Medical Research Institute-Wellcome Trust Research Programme, Kilifi, Kenya
- Nuffield Department of Medicine, The University of Oxford, Oxford, United Kingdom
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Thomann M, Kombo B, Musyoki H, Masinya K, Kuria S, Kyana M, Musimbi J, Lazarus L, Blanchard J, Bhattacharjee P, Lorway R. Remaking the Technosubject: Kenyan Men Contextualizing HIV Self-Testing Technologies. Med Anthropol 2022; 41:272-286. [PMID: 35129411 DOI: 10.1080/01459740.2022.2027405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The Kenyan government offers free HIV self-testing kits to men who have sex with men. The value of self-testing is based on the imaginary of an autonomous technosubject empowered to independently control testing services, thereby "freed," through technology, from the social conditions that might inhibit health services utilization. Following a community-centered collaborative approach, community researchers interviewed their peers who examined and reacted to the technology. Participants reframed the technosubject as intertwined with the social world and the testing kit itself as an object that exerts agency and possesses affective potential. Attending to these socio-material relationalities offers insights into program planning.
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Affiliation(s)
| | | | | | | | - Samuel Kuria
- Minority Person's Empowerment Program, Thika, Kenya
| | - Martin Kyana
- HIV & AIDS People's Alliance of Kenya, Mombasa, Kenya
| | - Janet Musimbi
- Partners for Health and Development in Africa, Nairobi, Kenya
| | | | | | - Parinita Bhattacharjee
- University of Manitoba, Winnipeg, Canada.,Partners for Health and Development in Africa, Nairobi, Kenya
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Rectal microbiota diversity in Kenyan MSM is inversely associated with frequency of receptive anal sex, independent of HIV status. AIDS 2021; 35:1091-1101. [PMID: 33534201 DOI: 10.1097/qad.0000000000002829] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Both HIV infection and identifying as MSM have been linked to altered rectal microbiota composition, but few studies have studied sexual behavioural associations with rectal microbiota within MSM. In addition, most rectal microbiota studies in MSM have been limited geographically to Europe and North America, and replication of findings in lower and middle-income countries is lacking. DESIGN A cross-sectional study. METHODS We enrolled MSM from Nairobi, Kenya, and determined their HIV/sexually transmitted infection status. Rectal specimens were obtained for 16s rRNA sequencing of the rectal microbiota, and sexual behaviour was characterized using a standardized questionnaire. Microbiome differences were modelled using nonparametric statistics, Bray-Curtis ecological distance metrics and analyses of differential taxa abundance. Multivariable linear regression was used to model HIV status and recent sexual activity as predictors of alpha diversity, controlling for a range of covariates. RESULTS Alpha diversity was consistently lower in Kenyan HIV-infected MSM (n = 80), including those on antiretroviral therapy (ART) compared with HIV-uninfected MSM. A statistical trend was observed for clustering of HIV status by Prevotella or Bacteroides dominance (P = 0.13). Several taxa were enriched in HIV-positive men, including Roseburia, Lachnospira, Streptococcus and Granulicatella. Receptive anal sex with several types of sexual partners (paying, regular, casual) was associated with lower Chao1 and Simpson diversity, independent of HIV status, while HIV infection was associated lower Chao1 (P = 0.030) but not Simpson diversity (P = 0.49). CONCLUSION Both HIV infection and sexual behaviour were associated with rectal microflora alpha diversity, in particular richness, but not Prevotella spp. dominance, in Kenyan MSM. Associations were more robust for sexual behaviour.
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van der Elst EM, Mudza R, Onguso JM, Kiirika L, Kombo B, Jahangir N, Graham SM, Operario D, Sanders EJ. A more responsive, multi-pronged strategy is needed to strengthen HIV healthcare for men who have sex with men in a decentralized health system: qualitative insights of a case study in the Kenyan coast. J Int AIDS Soc 2020; 23 Suppl 6:e25597. [PMID: 33000906 PMCID: PMC7527756 DOI: 10.1002/jia2.25597] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 07/16/2020] [Accepted: 07/20/2020] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION HIV healthcare services for men who have sex with men (MSM) in Kenya have not been openly provided because of persistent stigma and lack of healthcare capacity within Kenya's decentralized health sector. Building on an evaluation of a developed online MSM sensitivity training programme offered to East and South African healthcare providers, this study assessed views and responses to strengthen HIV healthcare services for MSM in Kenya. METHODS The study was conducted between January and July 2017 in Kilifi County, coastal Kenya. Seventeen policymakers participated in an in-depth interview and 59 stakeholders, who were purposively selected from three key groups (i.e. healthcare providers, implementing partners and members of MSM-led community-based organizations) took part in eight focus group discussions. Discussions aimed to understand gaps in service provision to MSM from different perspectives, to identify potential misconceptions, and to explore opportunities to improve MSM HIV healthcare services. Interviews and focus group discussions were recorded, transcribed verbatim and analysed using Braun and Clarke's thematic analysis. RESULTS Participants' responses revealed that all key groups navigated diverse challenges related to MSM HIV health services. Specific challenges included priority-setting by county government staff; preparedness of leadership and management on MSM HIV issues at the facility level; data reporting at the implementation level and advocacy for MSM health equity. Strong power inequities were observed between policy leadership, healthcare providers and MSM, with MSM feeling blamed for their sexual orientation. MSM agency, as expressed in their actions to access HIV services, was significantly constrained by county context, but can potentially be improved by political will, professional support and a human rights approach. CONCLUSIONS To strengthen HIV healthcare for MSM within a decentralized Kenyan health system, a more responsive, multi-pronged strategy adaptable and relevant to MSM's healthcare needs is required. Continued engagement with policy leadership, collaboration with health facilities, and partnerships with different community stakeholders are critical to improve HIV healthcare services for MSM.
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Affiliation(s)
- Elise M van der Elst
- Kenya Medical Research Institute‐Wellcome Trust Research ProgrammeKilifiKenya
- Department of Global HealthAcademic Medical CentreUniversity of Amsterdamthe Netherlands
| | - Rita Mudza
- Jomo Kenyatta University of Agriculture and TechnologyNairobiKenya
| | - Justus M Onguso
- Institute for Biotechnology ResearchJomo Kenyatta University of Agriculture and TechnologyNairobiKenya
| | - Leonard Kiirika
- Department of Horticulture and Food SecuritySchool of Agriculture and Environmental SciencesJomo Kenyatta University of Agriculture and TechnologyNairobiKenya
| | - Bernadette Kombo
- Kenya Medical Research Institute‐Wellcome Trust Research ProgrammeKilifiKenya
| | | | - Susan M Graham
- Departments of MedicineGlobal Health, and EpidemiologyUniversity of WashingtonSeattleWAUSA
| | - Don Operario
- Department of Behavioral and Social SciencesSchool of Public HealthBrown UniversityProvidenceRIUSA
| | - Eduard J Sanders
- Kenya Medical Research Institute‐Wellcome Trust Research ProgrammeKilifiKenya
- Department of Global HealthAcademic Medical CentreUniversity of Amsterdamthe Netherlands
- Nuffield Department of MedicineUniversity of OxfordOxfordUnited Kingdom
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Ngetsa CJ, Heymann MW, Thiong'o A, Wahome E, Mwambi J, Karani C, Menza NC, Mwashigadi G, Muturi MW, Graham SM, Mugo PM, Sanders EJ. Rectal gonorrhoea and chlamydia among men who have sex with men in coastal Kenya. Wellcome Open Res 2020; 4:79. [PMID: 32647750 PMCID: PMC7323594 DOI: 10.12688/wellcomeopenres.15217.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/14/2020] [Indexed: 11/20/2022] Open
Abstract
Background: Men who have sex with men (MSM) have a higher prevalence of Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) infections compared to the rest of the population, often remaining undiagnosed. In Kenya, prevalence of rectal CT and NG infection and NG antimicrobial sensitivity are poorly described. Methods: MSM who reported receptive anal intercourse (RAI) were recruited from an ongoing human immunodeficiency virus acquisition and treatment study in coastal Kenya in 2016-2017. Rectal swabs were collected at two time points 6 months apart to estimate prevalence and incidence of CT/NG infection using a molecular point-of-care assay. Participants positive for CT or NG were treated according to national guidelines. NG culture and antimicrobial susceptibility testing was performed. Participant and risk behaviour characteristics were collected and association with baseline CT/NG prevalence assessed by multivariable regression analysis. Results: Prevalence of CT/NG in 104 MSM was 21.2% (CT 13.5%, NG 9.6%, dual infection 1.9%) at baseline and 25.9% in 81 MSM at follow-up (CT 14.8%, NG 14.8%, dual infection 3.7%). CT/NG incidence was estimated at 53.0 (95% CI, 34.5-81.3) per 100 person-years. Most CT/NG positive participants were asymptomatic: 95.5% at baseline and 100% at follow-up. CT/NG infection was associated with being paid for sex [adjusted odds ratio (aOR)=6.2, 95% CI (1.7-22.9)] and being in formal employment [aOR=7.5, 95% CI (1.1-49.2)]. Six NG isolates were obtained at follow-up; all were susceptible to ceftriaxone and cefixime and all were resistant to penicillin, tetracycline and ciprofloxacin. Conclusions: There is a high prevalence and incidence of asymptomatic rectal CT and NG in MSM reporting RAI in coastal Kenya. MSM who were paid for sex or had formal employment were more likely to be infected with CT/NG suggesting increased risk behaviour during transactional sex. Antimicrobial susceptibility results suggest that current antibiotic choices in Kenya are appropriate for NG treatment.
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Affiliation(s)
- Caroline J. Ngetsa
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Marc W. Heymann
- Department of Medicine, Barts and The London NHS Trust, London, E11BB, UK
| | - Alex Thiong'o
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Elizabeth Wahome
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - John Mwambi
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Clara Karani
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Nelson C. Menza
- Department of Medical Laboratory Sciences, Kenyatta University, Nairobi, Kenya
| | - Grace Mwashigadi
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Margaret W. Muturi
- Department of Medical Laboratory Sciences, Kenyatta University, Nairobi, Kenya
| | - Susan M. Graham
- Department of Medicine, University of Washington, Seattle, WA, USA
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Peter M. Mugo
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Eduard J. Sanders
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
- Nuffield Department of Medicine, University of Oxford, Headington, UK
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Nduva GM, Hassan AS, Nazziwa J, Graham SM, Esbjörnsson J, Sanders EJ. HIV-1 Transmission Patterns Within and Between Risk Groups in Coastal Kenya. Sci Rep 2020; 10:6775. [PMID: 32317722 PMCID: PMC7174422 DOI: 10.1038/s41598-020-63731-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 03/30/2020] [Indexed: 11/09/2022] Open
Abstract
HIV-1 transmission patterns within and between populations at different risk of HIV-1 acquisition in Kenya are not well understood. We investigated HIV-1 transmission networks in men who have sex with men (MSM), injecting drug users (IDU), female sex workers (FSW) and heterosexuals (HET) in coastal Kenya. We used maximum-likelihood and Bayesian phylogenetics to analyse new (N = 163) and previously published (N = 495) HIV-1 polymerase sequences collected during 2005-2019. Of the 658 sequences, 131 (20%) were from MSM, 58 (9%) IDU, 109 (17%) FSW, and 360 (55%) HET. Overall, 206 (31%) sequences formed 61 clusters. Most clusters (85%) consisted of sequences from the same risk group, suggesting frequent within-group transmission. The remaining clusters were mixed between HET/MSM (7%), HET/FSW (5%), and MSM/FSW (3%) sequences. One large IDU-exclusive cluster was found, indicating an independent sub-epidemic among this group. Phylodynamic analysis of this cluster revealed a steady increase in HIV-1 infections among IDU since the estimated origin of the cluster in 1987. Our results suggest mixing between high-risk groups and heterosexual populations and could be relevant for the development of targeted HIV-1 prevention programmes in coastal Kenya.
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Affiliation(s)
- George M Nduva
- Lund University, Lund, Sweden
- KEMRI/Wellcome Trust Research Programme, Kilifi, Kenya
| | - Amin S Hassan
- Lund University, Lund, Sweden
- KEMRI/Wellcome Trust Research Programme, Kilifi, Kenya
| | | | - Susan M Graham
- KEMRI/Wellcome Trust Research Programme, Kilifi, Kenya
- University of Washington, Seattle, WA, USA
| | - Joakim Esbjörnsson
- Lund University, Lund, Sweden.
- The University of Oxford, Oxford, United Kingdom.
| | - Eduard J Sanders
- KEMRI/Wellcome Trust Research Programme, Kilifi, Kenya
- The University of Oxford, Oxford, United Kingdom
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10
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Ngetsa CJ, Heymann MW, Thiong'o A, Wahome E, Mwambi J, Karani C, Menza NC, Mwashigadi G, Muturi MW, Graham SM, Mugo PM, Sanders EJ. Rectal gonorrhoea and chlamydia among men who have sex with men in coastal Kenya. Wellcome Open Res 2020; 4:79. [PMID: 32647750 PMCID: PMC7323594 DOI: 10.12688/wellcomeopenres.15217.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2020] [Indexed: 11/05/2023] Open
Abstract
Background: Men who have sex with men (MSM) have a higher prevalence of Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) infections compared to the rest of the population, often remaining undiagnosed. In Kenya, prevalence of rectal CT and NG infection and NG antimicrobial sensitivity are poorly described. Methods: MSM who reported receptive anal intercourse (RAI) were recruited from an ongoing human immunodeficiency virus acquisition and treatment study in coastal Kenya in 2016-2017. Rectal swabs were collected at two time points 6 months apart to estimate prevalence and incidence of CT/NG infection using a molecular point-of-care assay. Participants positive for CT or NG were treated according to national guidelines. NG culture and antimicrobial susceptibility testing was performed. Participant and risk behaviour characteristics were collected and association with baseline CT/NG prevalence assessed by multivariable regression analysis. Results: Prevalence of CT/NG in 104 MSM was 21.2% (CT 13.5%, NG 9.6%, dual infection 1.9%) at baseline and 25.9% in 81 MSM at follow-up (CT 14.8%, NG 14.8%, dual infection 3.7%). CT/NG incidence was estimated at 53.0 (95% CI, 34.5-81.3) per 100 person-years. Most CT/NG positive participants were asymptomatic: 95.5% at baseline and 100% at follow-up. CT/NG infection was associated with being paid for sex [adjusted odds ratio (aOR)=6.2, 95% CI (1.7-22.9)] and being in formal employment [aOR=7.5, 95% CI (1.1-49.2)]. Six NG isolates were obtained at follow-up; all were susceptible to ceftriaxone and cefixime and all were resistant to penicillin, tetracycline and ciprofloxacin. Conclusions: There is a high prevalence and incidence of asymptomatic rectal CT and NG in MSM reporting RAI in coastal Kenya. MSM who were paid for sex or had formal employment were more likely to be infected with CT/NG suggesting increased risk behaviour during transactional sex. Antimicrobial susceptibility results suggest that current antibiotic choices in Kenya are appropriate for NG treatment.
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Affiliation(s)
- Caroline J. Ngetsa
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Marc W. Heymann
- Department of Medicine, Barts and The London NHS Trust, London, E11BB, UK
| | - Alex Thiong'o
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Elizabeth Wahome
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - John Mwambi
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Clara Karani
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Nelson C. Menza
- Department of Medical Laboratory Sciences, Kenyatta University, Nairobi, Kenya
| | - Grace Mwashigadi
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Margaret W. Muturi
- Department of Medical Laboratory Sciences, Kenyatta University, Nairobi, Kenya
| | - Susan M. Graham
- Department of Medicine, University of Washington, Seattle, WA, USA
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Peter M. Mugo
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Eduard J. Sanders
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
- Nuffield Department of Medicine, University of Oxford, Headington, UK
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11
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Ngetsa CJ, Heymann MW, Thiong'o A, Wahome E, Mwambi J, Karani C, Menza NC, Mwashigadi G, Muturi MW, Graham SM, Mugo PM, Sanders EJ. Rectal gonorrhoea and chlamydia among men who have sex with men in coastal Kenya. Wellcome Open Res 2019; 4:79. [PMID: 32647750 PMCID: PMC7323594 DOI: 10.12688/wellcomeopenres.15217.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/17/2019] [Indexed: 09/10/2023] Open
Abstract
Background: Men who have sex with men (MSM) have a higher prevalence of Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) infections compared to the rest of the population, often remaining undiagnosed. In Kenya, prevalence of rectal CT and NG infection and NG antimicrobial sensitivity are poorly described. Methods: MSM who reported receptive anal intercourse (RAI) were recruited from an ongoing human immunodeficiency virus acquisition and treatment study in coastal Kenya in 2016-2017. Rectal swabs were collected at two time points 6 months apart to estimate prevalence and incidence of CT/NG infection using a molecular point-of-care assay. Participants positive for CT or NG were treated according to national guidelines. NG culture and antimicrobial susceptibility testing was performed. Participant and risk behaviour characteristics were collected and association with baseline CT/NG prevalence assessed by multivariable regression analysis. Results: Prevalence of CT/NG in 104 MSM was 21.2% (CT 13.5%, NG 9.6%, dual infection 1.9%) at baseline and 25.9% in 81 MSM at follow-up (CT 14.8%, NG 14.8%, dual infection 3.7%). CT/NG incidence was estimated at 53.0 (95% CI, 34.5-81.3) per 100 person-years. Most CT/NG positive participants were asymptomatic: 95.5% at baseline and 100% at follow-up. CT/NG infection was associated with being paid for sex [adjusted odds ratio (aOR)=6.2, 95% CI (1.7-22.9)] and being in formal employment [aOR=7.5, 95% CI (1.1-49.2)]. Six NG isolates were obtained at follow-up; all were susceptible to ceftriaxone and cefixime and all were resistant to penicillin, tetracycline and ciprofloxacin. Conclusions: There is a high prevalence and incidence of asymptomatic rectal CT and NG in MSM reporting RAI in coastal Kenya. MSM who were paid for sex or had formal employment were more likely to be infected with CT/NG suggesting increased risk behaviour during transactional sex. Antimicrobial susceptibility results suggest that current antibiotic choices in Kenya are appropriate for NG treatment.
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Affiliation(s)
- Caroline J. Ngetsa
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Marc W. Heymann
- Department of Medicine, Barts and The London NHS Trust, London, E11BB, UK
| | - Alex Thiong'o
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Elizabeth Wahome
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - John Mwambi
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Clara Karani
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Nelson C. Menza
- Department of Medical Laboratory Sciences, Kenyatta University, Nairobi, Kenya
| | - Grace Mwashigadi
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Margaret W. Muturi
- Department of Medical Laboratory Sciences, Kenyatta University, Nairobi, Kenya
| | - Susan M. Graham
- Department of Medicine, University of Washington, Seattle, WA, USA
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Peter M. Mugo
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Eduard J. Sanders
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
- Nuffield Department of Medicine, University of Oxford, Headington, UK
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12
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Ngetsa CJ, Heymann MW, Thiong'o A, Wahome E, Mwambi J, Karani C, Menza NC, Mwashigadi G, Muturi MW, Graham SM, Mugo PM, Sanders EJ. Rectal gonorrhoea and chlamydia among men who have sex with men in coastal Kenya. Wellcome Open Res 2019; 4:79. [PMID: 32647750 PMCID: PMC7323594 DOI: 10.12688/wellcomeopenres.15217.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/08/2019] [Indexed: 11/05/2023] Open
Abstract
Background: Men who have sex with men (MSM) experience a high burden of Chlamydia trachomatis (CT) and Neisseria gonorrhoea (NG) infections. These remain largely undiagnosed in the context of syndromic treatment. In Kenya, prevalence of rectal CT and NG infection and NG antimicrobial sensitivity are poorly described. Methods: MSM who reported receptive anal intercourse (RAI) were recruited from an ongoing human immunodeficiency virus acquisition and treatment study in coastal Kenya in 2016-2017. Rectal swabs were collected at two time points 6 months apart to estimate prevalence of CT/NG using a molecular point-of-care assay. Participants positive for CT or NG were treated according to national guidelines. NG culture and antimicrobial susceptibility testing was performed. Participant and risk behaviour characteristics were collected and association with baseline CT/NG prevalence was assessed by multivariable regression analysis. Results: Prevalence of CT/NG in 104 MSM was 21.2% (CT 13.5%, NG 9.6%, dual infection 1.9%) at baseline and 25% in 84 MSM at follow-up (CT 14.3%, NG 14.3%, dual infection 3.6%). Most CT/NG positive participants were asymptomatic: 95.5% at baseline and 100% at follow-up. CT/NG infection was associated with being paid for sex (aOR=6.2, 95%CI (1.7-22.9)) and being in formal employment (aOR=7.5, 95%CI (1.14-49.2)). Six NG isolates were obtained at follow-up; all isolates were susceptible to ceftriaxone and cefixime (1 st line treatment for NG) and all were resistant to penicillin, tetracycline and ciprofloxacin. Conclusions: The high prevalence of asymptomatic rectal CT and NG in MSM reporting RAI demonstrates the need for frequent screening or presumptive treatment. MSM who were paid for sex or had formal employment were more likely to be infected with CT/NG, suggesting increased risk behaviour during transactional sex. Antimicrobial susceptibility results suggest that current antibiotic choices in Kenya are appropriate for NG treatment.
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Affiliation(s)
- Caroline J. Ngetsa
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Marc W. Heymann
- Department of Medicine, Barts and The London NHS Trust, London, E11BB, UK
| | - Alex Thiong'o
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Elizabeth Wahome
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - John Mwambi
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Clara Karani
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Nelson C. Menza
- Department of Medical Laboratory Sciences, Kenyatta University, Nairobi, Kenya
| | - Grace Mwashigadi
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Margaret W. Muturi
- Department of Medical Laboratory Sciences, Kenyatta University, Nairobi, Kenya
| | - Susan M. Graham
- Department of Medicine, University of Washington, Seattle, WA, USA
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Peter M. Mugo
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Eduard J. Sanders
- Department of Bioscience, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
- Nuffield Department of Medicine, University of Oxford, Headington, UK
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Hassan AS, Esbjörnsson J, Wahome E, Thiong’o A, Makau GN, Price MA, Sanders EJ. HIV-1 subtype diversity, transmission networks and transmitted drug resistance amongst acute and early infected MSM populations from Coastal Kenya. PLoS One 2018; 13:e0206177. [PMID: 30562356 PMCID: PMC6298690 DOI: 10.1371/journal.pone.0206177] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 10/08/2018] [Indexed: 11/21/2022] Open
Abstract
Background HIV-1 molecular epidemiology amongst men who have sex with men (MSM) in sub-Saharan Africa remains not well characterized. We aimed to determine HIV-1 subtype distribution, transmission clusters and transmitted drug resistance (TDR) in acute and early infected MSM from Coastal Kenya. Methods Analysis of HIV-1 partial pol sequences from MSM recruited 2005–2017 and sampled within six months of the estimated date of infection. Volunteers were classified as men who have sex with men exclusively (MSME) or with both men and women (MSMW). HIV-1 subtype and transmission clusters were determined by maximum-likelihood phylogenetics. TDR mutations were determined using the Stanford HIV drug resistance database. Results Of the 97 volunteers, majority (69%) were MSMW; 74%, 16%, 9% and 1% had HIV-1 subtypes A1, D, C or G, respectively. Overall, 65% formed transmission clusters, with substantial mixing between MSME and MSMW. Majority of volunteer sequences were either not linked to any reference sequence (56%) or clustered exclusively with sequences of Kenyan origin (19%). Eight (8% [95% CI: 4–16]) had at least one TDR mutation against nucleoside (n = 2 [2%]) and/or non-nucleoside (n = 7 [7%]) reverse transcriptase inhibitors. The most prevalent TDR mutation was K103N (n = 5), with sequences forming transmission clusters of two and three taxa each. There were no significant differences in HIV-1 subtype distribution and TDR between MSME and MSMW. Conclusions This HIV-1 MSM epidemic was predominantly sub-subtype A1, of Kenyan origin, with many transmission clusters and having intermediate level of TDR. Targeted HIV-1 prevention, early identification and care interventions are warranted to break the transmission cycle amongst MSM from Coastal Kenya.
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Affiliation(s)
- Amin S. Hassan
- KEMRI/Wellcome Trust Research Programme, Kilifi, Kenya
- Lund University, Lund, Sweden
- * E-mail:
| | | | | | | | - George N. Makau
- KEMRI/Wellcome Trust Research Programme, Kilifi, Kenya
- Lund University, Lund, Sweden
| | - Mathew A. Price
- International AIDS Vaccine Initiative, New York, New York, United States of America
- Department of Epidemiology and Biostatistics, University of California at San Francisco, San Francisco, California, United States of America
| | - Eduard J. Sanders
- KEMRI/Wellcome Trust Research Programme, Kilifi, Kenya
- Oxford University, Oxford, United Kingdom
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14
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Graham SM, Micheni M, Secor A, van der Elst EM, Kombo B, Operario D, Amico KR, Sanders EJ, Simoni JM. HIV care engagement and ART adherence among Kenyan gay, bisexual, and other men who have sex with men: a multi-level model informed by qualitative research. AIDS Care 2018; 30:S97-S105. [PMID: 30668136 PMCID: PMC6430645 DOI: 10.1080/09540121.2018.1515471] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 08/17/2018] [Indexed: 12/02/2022]
Abstract
Gay, bisexual, and other men who have sex with men (GBMSM) are highly stigmatized and male-male sex is often criminalized in sub-Saharan Africa, impeding access to quality care for sexual health, HIV prevention, and treatment. To better understand HIV care engagement and antiretroviral therapy (ART) adherence among GBMSM in this context, a conceptual model incorporating sociocultural factors is needed. We conducted a qualitative study of barriers to and facilitators of HIV care engagement and ART adherence among Kenyan GBMSM, informed by a conceptual model based on an access, information, motivation, and behavioral skills (access-IMB) model, with trust in providers and stigma and discrimination as a priori factors of interest. We conducted 30 semi-structured interviews with HIV-positive Kenyan GBMSM, of whom 20 were taking ART and 10 had not yet initiated treatment. A deductive approach was used to confirm the relevance of basic concepts of the access-IMB model, while an inductive approach was used to identify content that emerged from men's lived experiences. Access-related information, motivation, and behavioral skills appeared relevant to HIV care engagement and ART adherence, with stigma and discrimination appearing consistently across discourse exploring facilitators and barriers. Trusted providers and supportive family and friends helped many men, and resilience-related concepts such as selective disclosure of GBMSM status, connection to lesbian, gay, bisexual, and transgender (LGBT) organizations, self-acceptance, goal-setting, social identity and altruism emerged as important facilitators. Findings suggest a need to increase support from providers and peers for Kenyan GBMSM living with HIV infection. In addition, they point toward the potential value of interventions that provide opportunities to build or enhance one's sense of community belonging in order to improve HIV care engagement and promote ART adherence for this vulnerable population.
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Affiliation(s)
- Susan M. Graham
- Departments of Medicine, University of Washington, Seattle, WA, USA
- Departments of Global Health, University of Washington, Seattle, WA, USA
- Departments of Epidemiology, University of Washington, Seattle, WA, USA
- KEMRI Wellcome Trust Research Programme, Kilifi, Kenya
| | | | - Andrew Secor
- Department of Global Health, University of Washington, Seattle, WA, USA
| | | | | | - Don Operario
- Department of Behavior and Social Sciences, Brown University School of Public Health, Providence, RI, USA
| | - K. Rivet Amico
- Department of Health Behavior and Biological Sciences, University of Michigan School of Nursing, Ann Arbor, MI, USA
| | - Eduard J. Sanders
- KEMRI Wellcome Trust Research Programme, Kilifi, Kenya
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Jane M. Simoni
- Departments of Global Health, University of Washington, Seattle, WA, USA
- Departments of Psychology, University of Washington, Seattle, WA, USA
- Departments of Gender, Women and Sexuality Studies, University of Washington, Seattle, WA, USA
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15
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Abstract
The HIV pandemic has disproportionately impacted sub-Saharan Africa and Southern Africa in particular. The concurrent presence of overlapping epidemic drivers likely underpins how and why the HIV epidemic is so explosive in this region, with implications for understanding approaches to reduce transmission. In this review, we discuss the relative contribution and interaction between epidemic drivers in the Southern African context, including factors both distally and proximally associated with the likelihood and degree of exposure to HIV and factors that increase the probability of transmission when exposure occurs. In particular, we focus on young women as a key population in need of HIV prevention and highlight factors that increase their risk on several levels.
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Affiliation(s)
- Lyle R McKinnon
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Nelson R Mandela School of Medicine, 719 Umbilo Road, Private Bag X7, Congella, Durban, 4013, South Africa. .,Department of Medical Microbiology, University of Manitoba, Winnipeg, Canada.
| | - Quarraisha Abdool Karim
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Nelson R Mandela School of Medicine, 719 Umbilo Road, Private Bag X7, Congella, Durban, 4013, South Africa.,Department of Epidemiology, Columbia University, New York, USA
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16
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Factors Associated With Prevalent HIV Infection Among Kenyan MSM: The Anza Mapema Study. J Acquir Immune Defic Syndr 2017; 76:241-249. [PMID: 28746167 DOI: 10.1097/qai.0000000000001512] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND To inform future HIV treatment and care programs for men who have sex with men (MSM), we assessed the prevalence of and factors associated with previously diagnosed HIV-positive and out-of-care (PDOC) or newly diagnosed HIV-positive and out-of-care (NDOC) HIV infection among MSM enrolled in the prospective Anza Mapema cohort study. METHODS Participants were aged 18 years and older, reported oral or anal sex with a man in the past 6 months and were not already in HIV care or taking antiretroviral therapy in the past 3 months. At enrollment, men were tested for HIV infection and completed questionnaires through audio computer-assisted self-interview. Multinomial logistic regression was used to identify associations with PDOC or NDOC HIV infection, relative to HIV-negative status. RESULTS Among 711 enrolled men, 75 (10.5%) were seropositive including 21 PDOC and 54 NDOC men. In multivariable modeling, PDOC status was more likely than HIV-negative status among men who had experienced upsetting sexual experiences during childhood, had recently experienced MSM trauma, and did not report harmful alcohol use. NDOC infection status was more common among men aged 30 years and older and who had completed ≤8 years of education, relative to HIV-negative status. CONCLUSIONS Most HIV-positive men were unaware of their infection, indicating that HIV testing and counseling services tailored to this population are needed. To improve linkage to and retention in care, HIV testing and care services for MSM should screen and provide support for those with hazardous alcohol use and those who have experienced childhood sexual abuse or MSM trauma.
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17
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Sharma M, Barnabas RV, Celum C. Community-based strategies to strengthen men's engagement in the HIV care cascade in sub-Saharan Africa. PLoS Med 2017; 14:e1002262. [PMID: 28399122 PMCID: PMC5388461 DOI: 10.1371/journal.pmed.1002262] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Monica Sharma and colleagues discuss evidence-based approaches to improving HIV services for men in sub-Saharan Africa.
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Affiliation(s)
- Monisha Sharma
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - Ruanne V. Barnabas
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- School of Medicine, University of Washington, Seattle, Washington, United States of America
- Vaccine and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Connie Celum
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- School of Medicine, University of Washington, Seattle, Washington, United States of America
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18
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Cremin I, McKinnon L, Kimani J, Cherutich P, Gakii G, Muriuki F, Kripke K, Hecht R, Kiragu M, Smith J, Hinsley W, Gelmon L, Hallett TB. PrEP for key populations in combination HIV prevention in Nairobi: a mathematical modelling study. Lancet HIV 2017; 4:e214-e222. [PMID: 28233660 DOI: 10.1016/s2352-3018(17)30021-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 11/30/2016] [Accepted: 12/01/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND The HIV epidemic in the population of Nairobi as a whole is in decline, but a concentrated sub-epidemic persists in key populations. We aimed to identify an optimal portfolio of interventions to reduce HIV incidence for a given budget and to identify the circumstances in which pre-exposure prophylaxis (PrEP) could be used in Nairobi, Kenya. METHODS A mathematical model was developed to represent HIV transmission in specific key populations (female sex workers, male sex workers, and men who have sex with men [MSM]) and among the wider population of Nairobi. The scale-up of existing interventions (condom promotion, antiretroviral therapy, and male circumcision) for key populations and the wider population as have occurred in Nairobi is represented. The model includes a detailed representation of a PrEP intervention and is calibrated to prevalence and incidence estimates specific to key populations and the wider population. FINDINGS In the context of a declining epidemic overall but with a large sub-epidemic in MSM and male sex workers, an optimal prevention portfolio for Nairobi should focus on condom promotion for male sex workers and MSM in particular, followed by improved antiretroviral therapy retention, earlier antiretroviral therapy, and male circumcision as the budget allows. PrEP for male sex workers could enter an optimal portfolio at similar levels of spending to when earlier antiretroviral therapy is included; however, PrEP for MSM and female sex workers would be included only at much higher budgets. If PrEP for male sex workers cost as much as US$500, average annual spending on the interventions modelled would need to be less than $3·27 million for PrEP for male sex workers to be excluded from an optimal portfolio. Estimated costs per infection averted when providing PrEP to all female sex workers regardless of their risk of infection, and to high-risk female sex workers only, are $65 160 (95% credible interval [CrI] $43 520-$90 250) and $10 920 (95% CrI $4700-$51 560), respectively. INTERPRETATION PrEP could be a useful contribution to combination prevention, especially for under-served key populations in Nairobi. An ongoing demonstration project will provide important information regarding practical aspects of implementing PrEP for key populations in this setting. FUNDING The Bill & Melinda Gates Foundation.
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Affiliation(s)
- Ide Cremin
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK.
| | - Lyle McKinnon
- Department of Medical Microbiology, University of Manitoba, Winnipeg, Canada; Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya; Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
| | - Joshua Kimani
- Department of Medical Microbiology, University of Manitoba, Winnipeg, Canada; Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya; Sex Worker Outreach Program, Nairobi, Kenya
| | | | - Gloria Gakii
- Department of Medical Microbiology, University of Manitoba, Winnipeg, Canada; Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya; Sex Worker Outreach Program, Nairobi, Kenya
| | - Festus Muriuki
- Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya; Sex Worker Outreach Program, Nairobi, Kenya
| | | | - Robert Hecht
- Pharos Global Health Advisors, Washington, DC, USA
| | | | - Jennifer Smith
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK
| | - Wes Hinsley
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK
| | - Lawrence Gelmon
- Department of Medical Microbiology, University of Manitoba, Winnipeg, Canada; Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya; Sex Worker Outreach Program, Nairobi, Kenya
| | - Timothy B Hallett
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK
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19
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Molyneux S, Sariola S, Allman D, Dijkstra M, Gichuru E, Graham S, Kamuya D, Gakii G, Kayemba B, Kombo B, Maleche A, Mbwambo J, Marsh V, Micheni M, Mumba N, Parker M, Shio J, Yah C, van der Elst E, Sanders E. Public/community engagement in health research with men who have sex with men in sub-Saharan Africa: challenges and opportunities. Health Res Policy Syst 2016; 14:40. [PMID: 27234212 PMCID: PMC4884401 DOI: 10.1186/s12961-016-0106-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 04/19/2016] [Indexed: 11/23/2022] Open
Abstract
Background Community engagement, incorporating elements of the broader concepts of public and stakeholder engagement, is increasingly promoted globally, including for health research conducted in developing countries. In sub-Saharan Africa, community engagement needs and challenges are arguably intensified for studies involving gay, bisexual and other men who have sex with men, where male same-sex sexual interactions are often highly stigmatised and even illegal. This paper contextualises, describes and interprets the discussions and outcomes of an international meeting held at the Kenya Medical Research Institute-Wellcome Trust in Kilifi, Kenya, in November 2013, to critically examine the experiences with community engagement for studies involving men who have sex with men. Discussion We discuss the ethically charged nature of the language used for men who have sex with men, and of working with ‘representatives’ of these communities, as well as the complementarity and tensions between a broadly public health approach to community engagement, and a more rights based approach. We highlight the importance of researchers carefully considering which communities to engage with, and the goals, activities, and indicators of success and potential challenges for each. We suggest that, given the unintended harms that can emerge from community engagement (including through labelling, breaches in confidentiality, increased visibility and stigma, and threats to safety), representatives of same-sex populations should be consulted from the earliest possible stage, and that engagement activities should be continuously revised in response to unfolding realities. Engagement should also include less vocal and visible men who have sex with men, and members of other communities with influence on the research, and on research participants and their families and friends. Broader ethics support, advice and research into studies involving men who have sex with men is needed to ensure that ethical challenges – including but not limited to those related to community engagement – are identified and addressed. Summary Underlying challenges and dilemmas linked to stigma and discrimination of men who have sex with men in Africa raise special responsibilities for researchers. Community engagement is an important way of identifying responses to these challenges and responsibilities but itself presents important ethical challenges.
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Affiliation(s)
- Sassy Molyneux
- Department of Health Systems and Research Ethics, KEMRI/Wellcome Trust Research Programme (KWTRP), Kilifi, Kenya. .,The Ethox Centre, Department of Public Health, University of Oxford, Oxford, UK. .,The Centre for Clinical Vaccinology and Tropical Medicine, Nuffield Department of Medicine, University of Oxford, Oxford, UK.
| | - Salla Sariola
- The Ethox Centre, Department of Public Health, University of Oxford, Oxford, UK.,Faculty of Social Sciences, University of Torku, Torku, Finland
| | - Dan Allman
- Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - Maartje Dijkstra
- Department of Global Health, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - Evans Gichuru
- Department of Health Systems and Research Ethics, KEMRI/Wellcome Trust Research Programme (KWTRP), Kilifi, Kenya
| | - Susan Graham
- Kenya Research Group, University of Washington, Seattle, USA
| | - Dorcas Kamuya
- Department of Health Systems and Research Ethics, KEMRI/Wellcome Trust Research Programme (KWTRP), Kilifi, Kenya.,The Ethox Centre, Department of Public Health, University of Oxford, Oxford, UK
| | - Gloria Gakii
- University of Nairobi, Nairobi, Kenya.,University of Manitoba, Manitoba, USA
| | | | - Bernadette Kombo
- Department of Health Systems and Research Ethics, KEMRI/Wellcome Trust Research Programme (KWTRP), Kilifi, Kenya
| | - Allan Maleche
- KELIN - Reclaiming rights, Rebuilding Live, Nairobi, Kenya
| | - Jessie Mbwambo
- Department of Psychiatry and Mental Health, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Vicki Marsh
- Department of Health Systems and Research Ethics, KEMRI/Wellcome Trust Research Programme (KWTRP), Kilifi, Kenya.,The Ethox Centre, Department of Public Health, University of Oxford, Oxford, UK.,The Centre for Clinical Vaccinology and Tropical Medicine, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Murugi Micheni
- Department of Health Systems and Research Ethics, KEMRI/Wellcome Trust Research Programme (KWTRP), Kilifi, Kenya
| | - Noni Mumba
- Department of Health Systems and Research Ethics, KEMRI/Wellcome Trust Research Programme (KWTRP), Kilifi, Kenya
| | - Michael Parker
- The Ethox Centre, Department of Public Health, University of Oxford, Oxford, UK
| | - Jasmine Shio
- Department of Project Management, Deloitte Consulting Ltd, Dar es Salaam, Tanzania
| | - Clarence Yah
- Wits Reproductive Health & HIV Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Elise van der Elst
- Department of Health Systems and Research Ethics, KEMRI/Wellcome Trust Research Programme (KWTRP), Kilifi, Kenya.,Department of Global Health, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - Eduard Sanders
- Department of Health Systems and Research Ethics, KEMRI/Wellcome Trust Research Programme (KWTRP), Kilifi, Kenya.,Department of Global Health, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
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