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Jones HS, Anderson RL, Cust H, McClelland RS, Richardson BA, Thirumurthy H, Malama K, Hensen B, Platt L, Rice B, Cowan FM, Imai-Eaton JW, Hargreaves JR, Stevens O. HIV incidence among women engaging in sex work in sub-Saharan Africa: a systematic review and meta-analysis. Lancet Glob Health 2024; 12:e1244-e1260. [PMID: 39030057 DOI: 10.1016/s2214-109x(24)00227-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 04/08/2024] [Accepted: 05/24/2024] [Indexed: 07/21/2024]
Abstract
BACKGROUND Women who engage in sex work in sub-Saharan Africa have a high risk of acquiring HIV infection. HIV incidence has declined among all women in sub-Saharan Africa, but trends among women who engage in sex work are poorly characterised. We synthesised data on HIV incidence among women who engage in sex work in sub-Saharan Africa and compared these with the total female population to understand relative incidence and trends over time. METHODS We searched MEDLINE, Embase, Global Health, and Google Scholar from Jan 1, 1990, to Feb 28, 2024, and grey literature for studies that reported empirical estimates of HIV incidence among women who engage in sex work in any sub-Saharan Africa country. We calculated incidence rate ratios (IRRs) compared with total female population incidence estimates matched for age, district, and year, did a meta-analysis of IRRs, and used a continuous mixed-effects model to estimate changes in IRR over time. FINDINGS From 32 studies done between 1985 and 2020, 2194 new HIV infections were observed among women who engage in sex work over 51 490 person-years. Median HIV incidence was 4·3 per 100 person years (IQR 2·8-7·0 per 100 person-years). Incidence among women who engage in sex work was eight times higher than matched total population women (IRR 7·8 [95% CI 5·1-11·8]), with larger relative difference in western and central Africa (19·9 [9·6-41·0]) than in eastern and southern Africa (4·9 [3·4-7·1]). There was no evidence that IRRs changed over time (IRR per 5 years: 0·9 [0·7-1·2]). INTERPRETATION Across sub-Saharan Africa, HIV incidence among women who engage in sex work remains disproportionately high compared with the total female population. However, constant relative incidence over time indicates HIV incidence among women who engage in sex work has declined at a similar rate. Location-specific data for women who engage in sex work incidence are sparse, but improved surveillance and standardisation of incidence measurement approaches could fill these gaps. Sustained and enhanced HIV prevention for women who engage in sex work is crucial to address continuing inequalities and ensure declines in new HIV infections. FUNDING Bill & Melinda Gates Foundation, UK Research and Innovation, National Institutes of Health. TRANSLATION For the French translation of the abstract see Supplementary Materials section.
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Affiliation(s)
- Harriet S Jones
- Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK.
| | - Rebecca L Anderson
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, UK
| | - Henry Cust
- Institute of Global Health, University College London, London, UK
| | - R Scott McClelland
- Department of Medicine, University of Washington, Seattle, WA, USA; Department of Epidemiology, University of Washington, Seattle, WA, USA; Department of Biostatistics, University of Washington, Seattle, WA, USA; Department of Global Health, University of Washington, Seattle, WA, USA
| | - Barbra A Richardson
- Department of Biostatistics, University of Washington, Seattle, WA, USA; Department of Global Health, University of Washington, Seattle, WA, USA
| | - Harsha Thirumurthy
- Department of Medical Ethics and Health Policy, University of Pennsylvania, Philadelphia, PA, USA
| | - Kalonde Malama
- Ingram School of Nursing, McGill University, Montréal, Quebec, QC, Canada
| | - Bernadette Hensen
- Sexual and Reproductive Health Group, Department of Public Health, Institute of Tropical Medicine, Antwerp, Belgium
| | - Lucy Platt
- Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - Brian Rice
- Sheffield Centre for Health and Related Research, School of Medicine and Population Health, University of Sheffield, UK
| | - Frances M Cowan
- Department of International Public Health, Liverpool School of Tropical Medicine, Liverpool, UK; Centre for Sexual Health and HIV/AIDS Research Zimbabwe, Harare, Zimbabwe
| | - Jeffrey W Imai-Eaton
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, UK; Center for Communicable Disease Dynamics, Department of Epidemiology, Harvard T H Chan School of Public Health, Boston, MA, USA
| | - James R Hargreaves
- Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - Oliver Stevens
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, UK
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Liang P, Zhao P, Shi Y, Huang S, Wang C. The prevalence and correlates of unintended pregnancy among female sex workers in South China: a cross-sectional study. Reprod Health 2024; 21:110. [PMID: 39049096 PMCID: PMC11270758 DOI: 10.1186/s12978-024-01853-7] [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: 05/06/2024] [Accepted: 07/16/2024] [Indexed: 07/27/2024] Open
Abstract
BACKGROUND Female sex workers (FSW) are particularly vulnerable to unintended pregnancy. Research examining the experience of unintended pregnancy due to commercial sex among Chinese FSW, however, is limited. This study aimed to examine the prevalence and correlates of unintended pregnancy due to commercial sex among FSW in China. METHODS In 2021, a cross-sectional study was conducted among 1257 FSW in five cities from Guangdong provinces in South China. Data were collected on social-demographic characteristics, sexual behaviors, experience of unintended pregnancy due to commercial sex and its pregnancy outcome, as well as experience of abortion in lifetime. Multivariable logistic regression analysis was employed to identify factors associated with unintended pregnancy. RESULTS Among the 1257 FSW, 19.3% reported having at least one unintended pregnancy due to commercial sex. Of those, 96.7% chose to terminate the pregnancy through induced abortion, and 40.5% reported undergoing multiple induced abortions in their lifetime. Multivariable logistic regression indicated that FSW working in current location over one year (adjusted Odds Ratio (aOR): 2.82, 95% CI 1.71-4.64) and having more than seven clients in the past week (aOR: 4.53, 95% CI 2.74-7.51) were more likely to have had unintended pregnancy due to commercial sex. Working in high tier (aOR: 0.21, 95% CI 0.14-0.30) and consistent condom use with clients in the past month (aOR: 0.16, 95% CI 0.10-0.23) were associated with a lower proportion of FSW having ever had unintended pregnancy. CONCLUSIONS Unintended pregnancy are prevalent among FSW in South China. Interventions aimed at reducing the prevalence of unintended pregnancy and enhancing post-abortion care could be necessary among Chinese FSW.
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Affiliation(s)
- Peng Liang
- Dermatology Hospital, Southern Medical University, Guangzhou, 510095, China
- School of Public Health, Southern Medical University, Guangzhou, 510515, China
- Southern Medical University Institute for Global Health, Guangzhou, 510095, China
| | - Peizhen Zhao
- Dermatology Hospital, Southern Medical University, Guangzhou, 510095, China
- Southern Medical University Institute for Global Health, Guangzhou, 510095, China
| | - Yijia Shi
- Johns Hopkins Bloomberg School of Public Health, Baltimore, USA
| | - Shujie Huang
- Dermatology Hospital, Southern Medical University, Guangzhou, 510095, China
- Southern Medical University Institute for Global Health, Guangzhou, 510095, China
| | - Cheng Wang
- Dermatology Hospital, Southern Medical University, Guangzhou, 510095, China.
- School of Public Health, Southern Medical University, Guangzhou, 510515, China.
- Southern Medical University Institute for Global Health, Guangzhou, 510095, China.
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Jones HS, Anderson RL, Cust H, McClelland RS, Richardson BA, Thirumurthy H, Malama K, Hensen B, Platt L, Rice B, Cowan FM, Imai-Eaton JW, Hargreaves JR, Stevens O. HIV incidence among women engaging in sex work in sub-Saharan Africa: a systematic review and meta-analysis. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.10.17.23297108. [PMID: 37905066 PMCID: PMC10615019 DOI: 10.1101/2023.10.17.23297108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
Introduction HIV incidence among women in sub-Saharan Africa (SSA) has declined steadily, but it is unknown whether new infections among women who engage in sex work (WESW) have declined at a similar rate. We synthesised estimates of HIV incidence among WESW in SSA and compared these to the wider female population to understand levels and trends in incidence over time. Methods We searched Medline, Embase, Global Health, Popline, Web of Science, and Google Scholar from January 1990 to October 2022, and grey literature for estimates of HIV incidence among WESW in SSA. We included studies reporting empirical estimates in any SSA country. We calculated incidence rate ratios (IRR) compared to age-district-year matched total female population incidence estimates. We conducted a meta-analysis of IRRs and used a continuous mixed-effects model to estimate changes in IRR over time. Results From 32 studies between 1985 and 2020, 2,194 new HIV infections were observed in WESW over 51,000 person-years (py). Median HIV incidence was 4.3/100py (IQR 2.8-7.0/100py), declining from a median of 5.96/100py between 1985 and 1995 to a median of 3.2/100py between 2010 and 2020. Incidence among WESW was nine times higher than in matched total population women (RR 8.6, 95%CI: 5.7-12.9), and greater in Western and Central Africa (RR 22.4, 95%CI: 11.3-44.3) than in Eastern and Southern Africa (RR 5.3, 95%CI: 3.7-7.6). Annual changes in log IRRs were minimal (-0.1% 95%CI: -6.9 to +6.8%). Conclusions Across SSA, HIV incidence among WESW remains disproportionately high compared to the total female population but showed similar rates of decline between 1990 and 2020. Improved surveillance and standardisation of approaches to obtain empirical estimates of sex worker incidence would enable a clearer understanding of whether we are on track to meet global targets for this population and better support data-driven HIV prevention programming.
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Affiliation(s)
- Harriet S Jones
- Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - Rebecca L Anderson
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, United Kingdom
| | - Henry Cust
- Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
- Department of Global Health and Development, London School of Hygiene and Tropical Medicine, London, UK
| | - R Scott McClelland
- Department of Medicine, University of Washington, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, United States of America
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Barbra A Richardson
- Department of Biostatistics, University of Washington, Seattle, WA, USA
- Department of Global Health, University of Washington, Seattle, WA, United States of America
| | - Harsha Thirumurthy
- Department of Medical Ethics and Health Policy, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Kalonde Malama
- University of Toronto Factor-Inwentash Faculty of Social Work, Toronto Ontario, Canada
| | - Bernadette Hensen
- Sexual and Reproductive Health Group, Department of Public Health, Institute of Tropical Medicine, Antwerp, Belgium
| | - Lucy Platt
- Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - Brian Rice
- Sheffield Centre for Health and Related Research (SCHARR); School of Medicine and Population Health, University of Sheffield, UK
| | - Frances M Cowan
- Department of International Public Health, Liverpool School of Tropical Medicine, Liverpool, UK
- Centre for Sexual Health and HIV/AIDS Research Zimbabwe, Harare, Zimbabwe
| | - Jeffrey W Imai-Eaton
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, United Kingdom
- Center for Communicable Disease Dynamics, Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - James R Hargreaves
- Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - Oliver Stevens
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, United Kingdom
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Perrault Sullivan G, Guédou FA, Tounkara FK, Béhanzin L, Camara N, Aza-Gnandji M, Keita BD, Azonnadou O, Thera I, Avery L, Alary M. Longitudinal study of pregnancy intention and its association with pregnancy occurrence among female sex workers in Benin and Mali. Reprod Health 2023; 20:25. [PMID: 36717914 PMCID: PMC9887776 DOI: 10.1186/s12978-023-01565-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 01/06/2023] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND The intention of becoming pregnant has an evident impact on the prenatal and postnatal period. For female sex workers (FSWs) in West Africa, among whom pregnancies are frequent as are HIV and sexually transmitted infections, a better understanding of their pregnancy intention and its influence on pregnancy occurrence could help prevent unwanted pregnancies and adverse effects on wanted pregnancies. METHODS We recruited 330 FSWs in Benin and 322 in Mali and followed them for 12 months. We evaluated their pregnancy intention at recruitment and 6-month follow-up, using a multidimensional prospective measure that we developed. We assessed pregnancy occurrence with a pregnancy test and a retrospective questionnaire at 6 and 12 months. A Cox proportional hazard model was used to estimate the association between intention and pregnancy. We carried out an analysis to take losses to follow-up into account using the inverse of probability of censoring weights and a cluster analysis to corroborate that the multidimensional measure of pregnancy intention fitted the data. RESULTS 407 FSWs were included in the first 6-month analysis and 284 at 12 months. Mean age was 30.9 years. The pregnancy intention distribution was similar between the two periods: 15.2% in the first period and 16.3% in the second had a positive intention. One out of four were ambivalent and almost 60% (57.7% and 56.3%) had a negative intention. For 38.2% of the FSWs, the intention changed between the two periods. The global incidence rate (to first event) was 19.1 pregnancies per 100 person-years. There was a borderline significant trend (p = 0.0529) of decreased pregnancy incidence with decreasing intention. Compared to positive intention, the adjusted hazard ratio (aHR) for ambivalent and negative intentions were 0.71 [95% confidence interval (95% CI) 0.32-1.60] and 0.46 (95% CI 0.21-1.01), respectively. CONCLUSION The level of pregnancy intention influences its occurrence among FSWs and nearly one out of six wants a baby despite working in the sex trade. Programmatically, early identification of these women could facilitate provision of quality antenatal and postnatal care. Given other health risks associated with sex work this care may decrease potential risks of adverse maternal, fetal and neonatal outcomes.
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Affiliation(s)
- Gentiane Perrault Sullivan
- grid.23856.3a0000 0004 1936 8390Département de Médecine Sociale et Préventive, Université Laval, Québec, Canada ,grid.23856.3a0000 0004 1936 8390Axe Santé des Populations et Pratiques Optimales en Santé, Centre de recherche du Chu de Québec – Université Laval, Québec, Canada ,grid.434819.30000 0000 8929 2775Institut National de Santé Publique, Québec, Canada
| | - Fernand Aimé Guédou
- grid.23856.3a0000 0004 1936 8390Axe Santé des Populations et Pratiques Optimales en Santé, Centre de recherche du Chu de Québec – Université Laval, Québec, Canada ,Dispensaire IST, Centre de Santé Communal de Cotonou 1, Cotonou, Benin
| | - Fatoumata Korika Tounkara
- grid.23856.3a0000 0004 1936 8390Département de Médecine Sociale et Préventive, Université Laval, Québec, Canada
| | - Luc Béhanzin
- grid.23856.3a0000 0004 1936 8390Axe Santé des Populations et Pratiques Optimales en Santé, Centre de recherche du Chu de Québec – Université Laval, Québec, Canada ,Dispensaire IST, Centre de Santé Communal de Cotonou 1, Cotonou, Benin ,grid.440525.20000 0004 0457 5047École Nationale de Formation des Techniciens Supérieurs en Santé Publique et en Surveillance Épidémiologique, Université de Parakou, Parakou, Benin
| | | | | | | | - Odette Azonnadou
- Dispensaire IST, Centre de Santé Communal de Cotonou 1, Cotonou, Benin
| | | | - Lisa Avery
- grid.21613.370000 0004 1936 9609Institute for Global Public Health, Dept. Obstetrics, Gynecology and Reproductive Sciences, Max Rady Medical College of Medicine, University of Manitoba, Winnipeg, Canada
| | - Michel Alary
- grid.23856.3a0000 0004 1936 8390Département de Médecine Sociale et Préventive, Université Laval, Québec, Canada ,grid.23856.3a0000 0004 1936 8390Axe Santé des Populations et Pratiques Optimales en Santé, Centre de recherche du Chu de Québec – Université Laval, Québec, Canada ,grid.434819.30000 0000 8929 2775Institut National de Santé Publique, Québec, Canada
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Nouaman MN, Becquet V, Plazy M, Coffie PA, Zébago C, Montoyo A, Anoma C, Eholié S, Dabis F, Larmarange J. Incidence of HIV infection and associated factors among female sex workers in Côte d’Ivoire, results of the ANRS 12361 PrEP-CI study using recent infection assays. PLoS One 2022; 17:e0271988. [PMCID: PMC9671321 DOI: 10.1371/journal.pone.0271988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 07/11/2022] [Indexed: 11/19/2022] Open
Abstract
Background This study aimed to estimate, using an HIV Recent Infection Testing Algorithm (RITA), the HIV incidence and its associated factors among female sex workers (FSW) in Côte d’Ivoire. Methods A cross-sectional study was conducted in 2016–2017 in Abidjan and San Pedro’s region among FSW aged ≥ 18 years. In addition, a sociodemographic questionnaire, HIV screening was carried out by two rapid tests. In the event of a positive result, a dried blood spot sample was taken to determine, using a RITA adapted to the Ivorian context, if it was a recent HIV infection. Results A total of 1000 FSW were surveyed with a median age of 25 years (interquartile range: 21–29 years). 39 (3.9%) tested positive for HIV. The incidence of HIV was estimated to be 2.3 per 100 person-years, with higher incidence rates among those 24 years old or less (3.0% vs. 1.9%), non-Ivorian FSW (3.2% vs. 1.9%) and those with the lowest education level (4.6% in FSW who never went to school vs. 2.6%). The incidence seemed to be associated with the sex work practice conditions: higher incidence among FSW whose usual price was less than 3.50$ (4.3% vs.1.0%), FSW who had a larger number of clients on the last day of work (6.1% in those with 7 clients or more vs. 1.8%), FSW who reported not always using condoms with their clients (8.5% vs. 1.5%) and FSW who reported agreeing to sex without a condom in exchange for a large sum of money (10.1% vs. 1.2%). Conclusion This study confirms that FSW remain highly exposed to HIV infection. Exposure to HIV is also clearly associated with certain sex-work factors and the material conditions of sex work. Efforts in the fight against HIV infection must be intensified to reduce new infections among FSW.
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Affiliation(s)
- Marcellin N. Nouaman
- Programme PAC-CI, CHU Treichville, Site de Recherche ANRS, Abidjan, Côte d’Ivoire
- Département de Santé Publique et d’odontologie légale, UFR d’Odonto-Stomatologie, Université Félix Houphouet-Boigny, Abidjan, Côte d’Ivoire
- * E-mail:
| | - Valentine Becquet
- Ined, Aubervilliers, France
- Ceped, IRD, Université de Paris, Inserm, Paris, France
| | - Mélanie Plazy
- Bordeaux Population Health Research Center, Université de Bordeaux, Inserm, IRD, Bordeaux, France
| | - Patrick A. Coffie
- Programme PAC-CI, CHU Treichville, Site de Recherche ANRS, Abidjan, Côte d’Ivoire
- Département de Dermatologie et Infectiologie, UFR des Sciences Médicales, Université Félix Houphouet Boigny, Abidjan, Côte d’Ivoire
| | | | | | | | - Serge Eholié
- Programme PAC-CI, CHU Treichville, Site de Recherche ANRS, Abidjan, Côte d’Ivoire
- Département de Dermatologie et Infectiologie, UFR des Sciences Médicales, Université Félix Houphouet Boigny, Abidjan, Côte d’Ivoire
| | - François Dabis
- Bordeaux Population Health Research Center, Université de Bordeaux, Inserm, IRD, Bordeaux, France
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Kayesu I, Mayanja Y, Nakirijja C, Machira YW, Price M, Seeley J, Siu G. Uptake of and adherence to oral pre-exposure prophylaxis among adolescent girls and young women at high risk of HIV-infection in Kampala, Uganda: A qualitative study of experiences, facilitators and barriers. BMC Womens Health 2022; 22:440. [PMCID: PMC9648457 DOI: 10.1186/s12905-022-02018-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 10/20/2022] [Indexed: 11/12/2022] Open
Abstract
Background There is limited information on factors that influence oral pre-exposure prophylaxis (PrEP) uptake and adherence among adolescent girls and young women (AGYW). We conducted a qualitative methods study to explore experiences, facilitators and barriers of PrEP uptake and adherence to PrEP among AGYW at risk of Human Immunodeficiency Virus (HIV) infection in Kampala, Uganda. Methods This study was nested in a prospective cohort study that offered daily oral PrEP to AGYW. Between April 2019 and October 2020 we conducted in-depth interviews with 26 AGYW aged 14–24 years who had been offered or had been using PrEP for at least 6 months, including PrEP adherers (8), non-adherers (8) and those who had declined PrEP (10). After 12 months, follow-up interviews were conducted with 12 AGYW who had adhered to PrEP and those who had dropped it. Thematic analysis was conducted and data were further examined and categorized into the 5 constructs of the Socio-Ecological Model (SEM). Results PrEP uptake and adherence were facilitated by factors including: perceptions that one’s own or partner’s sexual behaviour was high risk, a negative attitude towards condoms, social support and wanting to maintain a negative HIV status after receiving a negative HIV test result. Good adherence to PrEP was enabled by effective counselling, support tools such as alarms and phone reminders and incentives like free treatment for STIs and other illnesses during study visits. Barriers to uptake included: anxiety about the pill burden, perceptions of being too young for PrEP and fear of being labelled `prostitute’ or `HIV positive’. Poor adherence was attributed to doubt over the efficacy of PrEP as a result of beliefs that because HIV was incurable, no medicine could prevent it. Alcohol use, side effects experienced, and mobility all had a negative impact on adherence. The majority of PrEP users reported feeling safe as a result of using PrEP which had both good and negative implications on their sexual behaviour, specifically the number of sexual partners and condom use. Conclusion Addressing community misconceptions to maximize uptake of PrEP among AGYW is important. Targeted education messages, and counselling to address misconceptions in ways that capture the attention of AGYW in communities are required.
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Affiliation(s)
- Ivy Kayesu
- grid.415861.f0000 0004 1790 6116Medical Research Council, Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine Uganda Research Unit, P.O. Box 49, Entebbe, Uganda
| | - Yunia Mayanja
- grid.415861.f0000 0004 1790 6116Medical Research Council, Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine Uganda Research Unit, P.O. Box 49, Entebbe, Uganda
| | - Catherine Nakirijja
- grid.415861.f0000 0004 1790 6116Medical Research Council, Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine Uganda Research Unit, P.O. Box 49, Entebbe, Uganda
| | - Yvonne Wangũi Machira
- grid.420368.b0000 0000 9939 9066International AIDS Vaccine Initiative (IAVI), 125 Broad Street, 9th Floor, 10004 New York, NY USA
| | - Matt Price
- grid.420368.b0000 0000 9939 9066International AIDS Vaccine Initiative (IAVI), 125 Broad Street, 9th Floor, 10004 New York, NY USA ,grid.266102.10000 0001 2297 6811Department of Epidemiology and Biostatistics, University of California, San Francisco (UCSF), 550 16th St, 94158 San Francisco, CA USA
| | - Janet Seeley
- grid.415861.f0000 0004 1790 6116Medical Research Council, Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine Uganda Research Unit, P.O. Box 49, Entebbe, Uganda ,grid.8991.90000 0004 0425 469XGlobal Health and Development Department, London School of Hygiene and Tropical Medicine, 15-17 Tavistock Place, WC1H 9SH London, UK
| | - Godfrey Siu
- grid.415861.f0000 0004 1790 6116Medical Research Council, Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine Uganda Research Unit, P.O. Box 49, Entebbe, Uganda ,grid.11194.3c0000 0004 0620 0548Child Health and Development Centre, Makerere University, Mulago Hill Road, Kampala, Uganda
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Whelan J, Abbing-Karahagopian V, Serino L, Unemo M. Gonorrhoea: a systematic review of prevalence reporting globally. BMC Infect Dis 2021; 21:1152. [PMID: 34763670 PMCID: PMC8582208 DOI: 10.1186/s12879-021-06381-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 06/09/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The World Health Organization (WHO) recommends periodic gonorrhoea prevalence assessments in the general population or proxies thereof (including pregnant women, women attending family planning clinics, military recruits, and men undergoing employment physicals for example) and in population groups at increased risk, including men-who-have-sex-with-men (MSM) and sex workers. METHOD We evaluated reported prevalence data, including estimates from proxy general population samples to reflect the WHO recommendations. We describe the outcomes from the general population country-by-country and extend previous reviews to include MSM, sex workers, and extragenital infections. RESULT AND CONCLUSION In our systematic search, 2015 titles were reviewed (January 2010-April 2019) and 174 full-text publications were included. National, population-based prevalence data were identified in only four countries (the United States of America, the United Kingdom, Peru, New Caledonia) and local population-based estimates were reported in areas within five countries (China, South Africa, Brazil, Benin, and Malawi). The remaining studies identified only reported test positivity from non-probability, proxy general population samples. Due to the diversity of the reviewed studies, detailed comparison across studies was not possible. In MSM, data were identified from 64 studies in 25 countries. Rectal infection rates were generally higher than urogenital or pharyngeal infection rates, where extragenital testing was conducted. Data on sex workers were identified from 41 studies in 23 countries; rates in female sex workers were high. Current prevalence monitoring was shown to be highly suboptimal worldwide. Serial prevalence monitoring of critical epidemiological variables, and guidelines to optimize prevalence study conduct and reporting beyond antenatal settings are recommended.
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Affiliation(s)
- Jane Whelan
- Clinical and Epidemiology Research and Development, GSK, Amsterdam, The Netherlands.
| | | | - Laura Serino
- Clinical and Epidemiology Research and Development, GSK, Siena, Italy
| | - Magnus Unemo
- WHO Collaborating Centre for Gonorrhoea and other STIs, Department of Laboratory Medicine, Microbiology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
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Adeoti AO, Desalu OO, Oluwadiya KS. Sexual practices, risk perception and HIV self-testing acceptability among long-distance truck drivers in Ekiti State, Nigeria. Niger Postgrad Med J 2021; 28:273-277. [PMID: 34850755 DOI: 10.4103/npmj.npmj_618_21] [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] [Indexed: 06/13/2023]
Abstract
BACKGROUND HIV/AIDS is a global health challenge with a high burden in sub-Saharan Africa. Long-distance drivers are a high-risk group whose assessment of HIV status, awareness and willingness to undergo HIV self-testing (HIVST) could help prevent the spread of HIV infections. OBJECTIVE This study examined the sexual practices, risk perception and HIVST acceptability among long-distance truck drivers in Ekiti State, Nigeria. METHODS A cross-sectional study was conducted among long-distance truck drivers between September 2019 and December 2019. A semi-structured questionnaire was designed to investigate the perceived sexual risk factors and willingness to undergo HIVST. RESULTS Of the 306 drivers that participated in the study, almost half (49.8%) had their first sexual experience before they turned 18 years. About one-third (38.6%) had multiple sex partners and (34.0%) patronised commercial sex workers in the past 6 months. Consistent use of condoms was reported in a negligible percentage (3.0%), while 7.4% used intravenous drugs. Two-thirds of the respondents were interested in HIVST, while 32.2% knew their HIV status. Significant factors associated with multiple sex partners were the duration of working as a long-distance truck driver and patronage of sex workers. CONCLUSION A significant proportion of the long-distance drivers were engaged in unsafe sexual practices and are at risk for HIV transmission. Considering the mobile nature of the long-distance drivers, the risky practices of these workers require intense advocacy, testing and treatment to reduce HIV transmission. Scaling-up testing using HIVST has the potential to bridge the gap in the diagnosis of HIV among long-distance drivers who are willing to be tested.
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9
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Nsanzimana S, Mills EJ, Harari O, Mugwaneza P, Karita E, Uwizihiwe JP, Park JJ, Dron L, Condo J, Bucher H, Thorlund K. Prevalence and incidence of HIV among female sex workers and their clients: modelling the potential effects of intervention in Rwanda. BMJ Glob Health 2021; 5:bmjgh-2020-002300. [PMID: 32764126 PMCID: PMC7412619 DOI: 10.1136/bmjgh-2020-002300] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/27/2020] [Accepted: 03/07/2020] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Rwanda has identified several targeted HIV prevention strategies, such as promotion of condom use and provision of antiretroviral therapy (ART) and pre-exposure prophylaxis (PrEP) for female sex workers (FSWs). Given this country's limited resources, understanding how the HIV epidemic will be affected by these strategies is crucial. METHODS We developed a Markov model to estimate the effects of targeted strategies to FSWs on the HIV prevalence/incidence in Rwanda from 2017 to 2027. Our model consists of the six states: HIV-; HIV+ undiagnosed/diagnosed pre-ART; HIV+ diagnosed with/without ART; and death. We considered three populations: FSWs, sex clients and the general population. For the period 2017-2027, the HIV epidemic among each of these population was estimated using Rwanda's demographic, sexual risk behaviour and HIV-associated morbidity and mortality data. RESULTS Between 2017 and 2027, with no changes in the current condom and ART use, the overall number of people living with HIV is expected to increase from 344,971 to 402,451. HIV incidence will also decrease from 1.36 to 1.20 100 person-years. By 2027, a 30% improvement in consistent condom use among FSWs will result in absolute reduction of HIV prevalence among FSWs, sex clients and the general population by 7.86%, 5.97% and 0.17%, respectively. While recurring HIV testing and improving the ART coverage mildly reduced the prevalence/incidence among FSWs and sex clients, worsening the two (shown by our worst-case scenario) will result in an increase in the HIV prevalence/incidence among FSWs and sex clients. Introduction of PrEP to FSWs in 2019 will reduce the HIV incidence among FSWs by 1.28%. CONCLUSIONS Continued efforts toward improving condom and ART use will be critical for Rwanda to continue their HIV epidemic control. Implementing a targeted intervention strategy in PrEP for FSWs will reduce the HIV epidemic in this high-risk population.
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Affiliation(s)
- Sabin Nsanzimana
- Rwanda Biomedical Center, Kigali, Rwanda .,Basel Institute for Clinical Epidemiology and Biostatistics, University of Basel, Basel, Switzerland
| | - Edward J Mills
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada, McMaster University, Hamilton, Ontario, Canada.,Real World and Advanced Analytics, Cytel Inc, Vancouver, BC, Canada
| | - Ofir Harari
- Real World and Advanced Analytics, Cytel Inc, Vancouver, BC, Canada
| | - Placidie Mugwaneza
- Institute for HIV, Diseases Prevention and Control, Rwanda Biomedical Center, Kigali, Rwanda
| | - Etienne Karita
- School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, United States
| | - Jean Paul Uwizihiwe
- School of Medicine and Pharmacy, Department of Primary Health Care, University of Rwanda, Kigali, Rwanda.,Department of Public Health, Center for Global Health, Aarhus University, Aarhus University, Aarhus, Denmark
| | - Jay Jh Park
- Real World and Advanced Analytics, Cytel Inc, Vancouver, BC, Canada.,Experimental Medicine, Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Louis Dron
- Real World and Advanced Analytics, Cytel Inc, Vancouver, BC, Canada
| | - Jeanine Condo
- School of Public Health, University of Rwanda, Kigali, Rwanda
| | - Heiner Bucher
- Basel Institute for Clinical Epidemiology and Biostatistics, University of Basel, Basel, Switzerland
| | - Kristian Thorlund
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada, McMaster University, Hamilton, Ontario, Canada.,Real World and Advanced Analytics, Cytel Inc, Vancouver, BC, Canada
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10
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Wu MY, Gong HZ, Hu KR, Zheng HY, Wan X, Li J. Effect of syphilis infection on HIV acquisition: a systematic review and meta-analysis. Sex Transm Infect 2020; 97:525-533. [PMID: 33219164 PMCID: PMC8543214 DOI: 10.1136/sextrans-2020-054706] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/12/2020] [Accepted: 10/25/2020] [Indexed: 11/16/2022] Open
Abstract
Objectives Co-infection of syphilis and HIV remains hard to manage and its morbidity shows a rising tendency. Syphilis has been associated with increased risk of HIV acquisition in high-risk groups, especially in men who have sex with men (MSM). This systematic review and meta-analysis estimates the effect of syphilis infection on subsequent HIV acquisition, and assesses its difference between MSM and other high-risk populations. Methods Five electronic databases were searched for literature published to 21 September 2019 without language restrictions. Longitudinal studies that enrolled key populations to compare the incidence of HIV with and without syphilis exposure were included. We used a random-effects model to estimate the effect of syphilis infection on HIV acquisition among high-risk populations, which include MSM, sex workers, serodiscordant couples, people who inject drugs and attendees of STD clinics. Results A total of 17 cohorts and 5 case-control studies involving 65 232 participants were included. HIV incidence showed a two-time increase after syphilis exposure, compared with a control group (relative risk (RR) 2.67 (95% CI 2.05 to 3.47); p<0.05 for prevalence; RR 3.21 (95% CI 2.26 to 4.57); p=0.419 for incidence). No significant differences were observed between MSM and other high-risk groups in syphilis infection prevalence (RR 2.60 (95% CI 1.78 to 3.80); p<0.05 vs RR, 2.98 (95% CI 2.15 to 4.14); p<0.05; ratio of relative risk 0.76 (95% CI 0.49 to 1.17)). Conclusions Syphilis infection increases the risk of HIV acquisition in high-risk populations. There is no evidence to suggest MSM are at greater risk than other high-risk populations. Prompt diagnosis, timely treatment, preventive interventions against syphilis infection would be a worthwhile investment for reducing HIV incidence. Strategies to combat stigma and discrimination targeted at MSM are pragmatically needed.
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Affiliation(s)
- Meng Yin Wu
- Department of Dermatology and Venereology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hui Zi Gong
- Department of Dermatology and Venereology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Kui Ru Hu
- Epidemiology and Statistics, Institute of Basic Medical Sciences at Chinese Academy of Medical Sciences & School of Basic Medicine at Peking Union Medical College, Beijing, China
| | - He-Yi Zheng
- Department of Dermatology and Venereology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xia Wan
- Epidemiology and Statistics, Institute of Basic Medical Sciences at Chinese Academy of Medical Sciences & School of Basic Medicine at Peking Union Medical College, Beijing, China
| | - Jun Li
- Department of Dermatology and Venereology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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11
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Perrault Sullivan G, Guédou FA, Batona G, Kintin F, Béhanzin L, Avery L, Bédard E, Gagnon MP, Zannou DM, Kpatchavi A, Alary M. Overview and factors associated with pregnancies and abortions occurring in sex workers in Benin. BMC WOMENS HEALTH 2020; 20:248. [PMID: 33167931 PMCID: PMC7650197 DOI: 10.1186/s12905-020-01091-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 09/27/2020] [Indexed: 11/25/2022]
Abstract
Background Behavioural and structural factors related to sex work, place female sex workers (FSWs) at high risk of maternal mortality and morbidity (MMM), with a large portion due to unintended pregnancies and abortions. In the African context where MMM is the highest in the world, understanding the frequency and determinants of pregnancy and abortion among FSWs is important in order to meet their sexual and reproductive health needs. Methods Data from two Beninese cross-sectional surveys among FSWs aged 18+ (2013, N = 450; 2016, N = 504) were merged. We first performed exploratory univariate analyses to identify factors associated with pregnancy and abortion (p < 0.20) using Generalized Estimating Equations with Poisson regression and robust variance. Multivariate analyses first included all variables identified in the univariate models and backward selection (p ≤ 0.05) was used to generate the final models. Results Median age was 39 years (N = 866). The proportion of FSWs reporting at least one pregnancy during sex work practice was 16.4%, of whom 42.3% had more than one. Most pregnancies ended with an abortion (67.6%). In multivariate analyses, younger age, longer duration in sex work, previous HIV testing, having a boyfriend and not using condoms with him were significantly (p < 0.05) associated with more pregnancies. Conclusion One FSW out of five had at least one pregnancy during her sex work practice. Most of those pregnancies, regardless of their origin, ended with an abortion. Improving access to various forms of contraception and safe abortion is the key to reducing unintended pregnancies and consequently, MMM among FSWs in Benin.
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Affiliation(s)
- Gentiane Perrault Sullivan
- Axe Santé des populations et pratiques optimales en santé, Centre de recherche du CHU de Québec, Université Laval, Québec, Canada.,Département de médecine sociale et préventive, Université Laval, Québec, Canada
| | - Fernand Aimé Guédou
- Axe Santé des populations et pratiques optimales en santé, Centre de recherche du CHU de Québec, Université Laval, Québec, Canada.,Dispensaire IST, Centre de santé communal de Cotonou 1, Cotonou, Bénin
| | - Georges Batona
- Axe Santé des populations et pratiques optimales en santé, Centre de recherche du CHU de Québec, Université Laval, Québec, Canada.,Dispensaire IST, Centre de santé communal de Cotonou 1, Cotonou, Bénin
| | - Frédéric Kintin
- Dispensaire IST, Centre de santé communal de Cotonou 1, Cotonou, Bénin
| | - Luc Béhanzin
- Axe Santé des populations et pratiques optimales en santé, Centre de recherche du CHU de Québec, Université Laval, Québec, Canada.,Dispensaire IST, Centre de santé communal de Cotonou 1, Cotonou, Bénin.,École Nationale de Formation des Techniciens Supérieurs en Santé Publique et en Surveillance Épidémiologique, Université de Parakou, Parakou, Bénin
| | - Lisa Avery
- Medical Microbiology, College of Medicine, University of Manitoba, Winnipeg, Canada
| | - Emmanuelle Bédard
- Département des sciences infirmières, Université du Québec à Rimouski, Lévis, Québec, Canada
| | - Marie-Pierre Gagnon
- Axe Santé des populations et pratiques optimales en santé, Centre de recherche du CHU de Québec, Université Laval, Québec, Canada.,Département des sciences infirmières, Université Laval, Québec, Canada
| | - Djimon Marcel Zannou
- Faculté des sciences de la santé, Université d'Abomey-Calavi, Cotonou, Bénin.,Centre national hospitalier universitaire HMK de Cotonou, Cotonou, Bénin
| | - Adolphe Kpatchavi
- Département de Sociologie - Anthropologie, Faculté des Lettres, Arts et Sciences Humaines, Université d'Abomey-Calavi, Cotonou, Bénin
| | - Michel Alary
- Axe Santé des populations et pratiques optimales en santé, Centre de recherche du CHU de Québec, Université Laval, Québec, Canada. .,Département de médecine sociale et préventive, Université Laval, Québec, Canada.
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12
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Tiwari R, Wang J, Han H, Kalu N, Sims LB, Katz DA, Burke B, Tsegaye AT, Carter KA, Freije S, Guo B, Albirair M, Barr‐DiChiara M, Baggaley R, Jamil MS, Senya K, Johnson C, Khosropour CM. Sexual behaviour change following HIV testing services: a systematic review and meta-analysis. J Int AIDS Soc 2020; 23:e25635. [PMID: 33161636 PMCID: PMC7649006 DOI: 10.1002/jia2.25635] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 10/06/2020] [Accepted: 10/12/2020] [Indexed: 12/21/2022] Open
Abstract
INTRODUCTION Learning one's HIV status through HIV testing services (HTS) is an essential step toward accessing treatment and linking to preventive services for those at high HIV risk. HTS may impact subsequent sexual behaviour, but the degree to which this varies by population or is true in the setting of contemporary HIV prevention activities is largely unknown. As part of the 2019 World Health Organization Consolidated Guidelines on HTS, we undertook a systematic review and meta-analysis to determine the effect of HTS on sexual behaviour. METHODS We searched nine electronic databases for studies published between July 2010 and December 2019. We included studies that reported on at least one outcome (condom use [defined as the frequency of condom use or condom-protected sex], number of sex partners, HIV incidence, STI incidence/prevalence). We included studies that prospectively assessed outcomes and that fit into one of three categories: (1) those evaluating more versus less-intensive HTS, (2) those of populations receiving HTS versus not and (3) those evaluating outcomes after versus before HTS. We conducted meta-analyses using random-effects models. RESULTS AND DISCUSSION Of 29 980 studies screened, 76 studies were included. Thirty-eight studies were randomized controlled trials, 36 were cohort studies, one was quasi-experimental and one was a serial cross-sectional study. There was no significant difference in condom use among individuals receiving more-intensive HTS compared to less-intensive HTS (relative risk [RR]=1.03; 95% CI: 0.99 to 1.07). Condom use was significantly higher after receiving HTS compared to before HTS for individuals newly diagnosed with HIV (RR = 1.65; 95% CI: 1.36 to 1.99) and marginally significantly higher for individuals receiving an HIV-negative diagnosis (RR = 1.63; 95% CI: 1.01 to 2.62). Individuals receiving more-intensive HTS reported fewer sex partners at follow-up than those receiving less-intensive HTS, but the finding was not statistically significant (mean difference = -0.28; 95% CI: -3.66, 3.10). CONCLUSIONS Our findings highlight the importance of using limited resources towards HTS strategies that focus on early HIV diagnosis, treatment and prevention services rather than resources dedicated to supplementing or enhancing HTS with additional counselling or other interventions.
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Affiliation(s)
- Ruchi Tiwari
- Department of EpidemiologyUniversity of WashingtonSeattleWAUSA
| | - Jiayu Wang
- Department of Global HealthUniversity of WashingtonSeattleWAUSA
| | - Hannah Han
- Department of Global HealthUniversity of WashingtonSeattleWAUSA
| | - Ngozi Kalu
- Department of Infectious Disease EpidemiologyLondon School of Hygiene and Tropical MedicineLondonUnited Kingdom
| | - Lee B Sims
- School of Public HealthImperial College LondonLondonUnited Kingdom
| | - David A Katz
- Department of Global HealthUniversity of WashingtonSeattleWAUSA
| | - Barbara Burke
- Department of Global HealthUniversity of WashingtonSeattleWAUSA
| | - Adino T Tsegaye
- Department of EpidemiologyUniversity of WashingtonSeattleWAUSA
| | - Kayla A Carter
- Department of EpidemiologyUniversity of WashingtonSeattleWAUSA
| | - Sophie Freije
- Department of EpidemiologyUniversity of WashingtonSeattleWAUSA
| | - Boya Guo
- Department of EpidemiologyUniversity of WashingtonSeattleWAUSA
| | | | | | - Rachel Baggaley
- Global HIV, Hepatitis and STIs programmeWorld Health OrganizationGenevaSwitzerland
| | - Muhammad S Jamil
- Global HIV, Hepatitis and STIs programmeWorld Health OrganizationGenevaSwitzerland
| | - Kafui Senya
- Communicable Diseases ClusterWorld Health OrganizationAccraGhana
| | - Cheryl Johnson
- Global HIV, Hepatitis and STIs programmeWorld Health OrganizationGenevaSwitzerland
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13
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Incident HIV among pregnant and breast-feeding women in sub-Saharan Africa: a systematic review and meta-analysis. AIDS 2020; 34:761-776. [PMID: 32167990 DOI: 10.1097/qad.0000000000002487] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVES A previous meta-analysis reported high HIV incidence among pregnant and breast-feeding women in sub-Saharan Africa (SSA), but limited evidence of elevated risk of HIV acquisition during pregnancy or breast-feeding when compared with nonpregnant periods. The rapidly evolving HIV prevention and treatment landscape since publication of this review may have important implications for maternal HIV incidence. DESIGN Systematic review and meta-analysis. METHODS We searched four databases and abstracts from relevant conferences through 1 December 2018, for literature on maternal HIV incidence in SSA. We used random-effects meta-analysis to summarize incidence rates and ratios, and to estimate 95% prediction intervals. We evaluated potential sources of heterogeneity with random-effects meta-regression. RESULTS Thirty-seven publications contributed 100 758 person-years of follow-up. The estimated average HIV incidence rate among pregnant and breast-feeding women was 3.6 per 100 person-years (95% prediction interval: 1.2--11.1), while the estimated average associations between pregnancy and risk of HIV acquisition, and breast-feeding and risk of HIV acquisition, were close to the null. Wide 95% prediction intervals around summary estimates highlighted the variability of HIV incidence across populations of pregnant and breast-feeding women in SSA. Average HIV incidence appeared associated with age, partner HIV status, and calendar time. Average incidence was highest among studies conducted pre-2010 (4.1/100 person-years, 95% prediction interval: 1.1--12.2) and lowest among studies conducted post-2014 (2.1/100 person-years, 95% prediction interval: 0.7--6.5). CONCLUSION Substantial HIV incidence among pregnant and breast-feeding women in SSA, even in the current era of combination HIV prevention and treatment, underscores the need for prevention tailored to high-risk pregnant and breast-feeding women.
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Ayerdi Aguirrebengoa O, Vera Garcia M, Rueda Sanchez M, D´Elia G, Chavero Méndez B, Alvargonzalez Arrancudiaga M, Bello León S, Puerta López T, Clavo Escribano P, Ballesteros Martín J, Menendez Prieto B, Fuentes ME, García Lotero M, Raposo Utrilla M, Rodríguez Martín C, Del Romero Guerrero J. Risk factors associated with sexually transmitted infections and HIV among adolescents in a reference clinic in Madrid. PLoS One 2020; 15:e0228998. [PMID: 32176884 PMCID: PMC7075699 DOI: 10.1371/journal.pone.0228998] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 01/27/2020] [Indexed: 11/25/2022] Open
Abstract
Introduction Adolescents have a higher incidence of sexually transmitted infections (STIs) than persons of older age groups. The WHO emphasises the need to adopt specific and comprehensive prevention programmes aimed at this age group. The objective of this work was to analyse the prevalence of HIV/STIs among adolescents and to identify the sociodemographic, clinical and behavioural markers associated with these infections, in order to promote specific preventive strategies. Methodology Retrospective descriptive study of adolescents, aged 10–19 years, who were attended to for the first consultation between 2016 and 2018 in a reference STI clinic in Madrid. All adolescents were given a structured epidemiological questionnaire where information on sociodemographic, clinical and behavioural characteristics was collected. They were screened for human inmmunodeficiency virus (HIV) and other sexually transmitted infections (STIs). The processing and analysis of the data was done using the STATA 15.0 statistical package. Results The frequency of HIV/STIs detected among all adolescents was: gonorrhoea 21.7%, chlamydia 17.1%, syphilis 4.8% and HIV 2.4%. After conducting a multivariate analysis, the independent and statistically significant variables related to the presence of an STI were having first sexual relations at a young age and having a history of STIs. Latin American origin was just below the level of statistical significance (p = 0.066). Discussion/Conclusions Adolescents who begin sexual relations at an early age or those who have a history of HIV/STIs are at higher risk of acquiring STIs. Comprehensive prevention programmes aimed specifically at adolescents should be implemented, especially before the age of 13 years.
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Affiliation(s)
| | - Mar Vera Garcia
- Centro Sanitario Sandoval, Hospital Clínico San Carlos, IdISSC, Madrid, Spain
| | | | - Giovanna D´Elia
- Centro Sanitario Sandoval, Hospital Clínico San Carlos, IdISSC, Madrid, Spain
| | | | | | | | - Teresa Puerta López
- Centro Sanitario Sandoval, Hospital Clínico San Carlos, IdISSC, Madrid, Spain
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15
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Bowring AL, Ampt FH, Schwartz S, Stoové MA, Luchters S, Baral S, Hellard M. HIV pre-exposure prophylaxis for female sex workers: ensuring women's family planning needs are not left behind. J Int AIDS Soc 2020; 23:e25442. [PMID: 32064765 PMCID: PMC7025091 DOI: 10.1002/jia2.25442] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 11/28/2019] [Accepted: 12/05/2019] [Indexed: 12/19/2022] Open
Abstract
INTRODUCTION Female sex workers (FSWs) experience overlapping burdens of HIV, sexually transmitted infections and unintended pregnancy. Pre-exposure prophylaxis (PrEP) is highly efficacious for HIV prevention. It represents a promising strategy to reduce HIV acquisition risks among FSWs specifically given complex social and structural factors that challenge consistent condom use. However, the potential impact on unintended pregnancy has garnered little attention. We discuss the potential concerns and opportunities for PrEP to positively or negatively impact the sexual and reproductive health and rights (SRHR) of FSWs. DISCUSSION FSWs have high unmet need for effective contraception and unintended pregnancy is common in low- and middle-income countries. Unintended pregnancy can have enduring health and social effects for FSWs, including consequences of unsafe abortion and financial impacts affecting subsequent risk-taking. It is possible that PrEP could negatively impact condom and other contraceptive use among FSWs due to condom substitution, normalization, external pressures or PrEP provision by single-focus services. There are limited empirical data available to assess the impact of PrEP on pregnancy rates in real-life settings. However, pregnancy rates are relatively high in PrEP trials and modelling suggests a potential two-fold increase in condomless sex among FSWs on PrEP, which, given low use of non-barrier contraceptive methods, would increase rates of unintended pregnancy. Opportunities for integrating family planning with PrEP and HIV services may circumvent these concerns and support improved SRHR. Synergies between PrEP and family planning could promote uptake and maintenance for both interventions. Integrating family planning into FSW-focused community-based HIV services is likely to be the most effective model for improving access to non-barrier contraception among FSWs. However, barriers to integration, such as provider skills and training and funding mechanisms, need to be addressed. CONCLUSIONS As PrEP is scaled up among FSWs, there is growing impetus to consider integrating family planning services with PrEP delivery in order to better meet the diverse SRHR needs of FSWs and to prevent unintended consequences. Programme monitoring combined with research can close data gaps and mobilize adequate resources to deliver comprehensive SRHR services respectful of all women's rights.
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Affiliation(s)
- Anna L Bowring
- Department of EpidemiologyJohns Hopkins School of Public HealthBaltimoreMDUSA
- Burnet InstituteMelbourneVictoriaAustralia
| | - Frances H Ampt
- Burnet InstituteMelbourneVictoriaAustralia
- Department of Epidemiology and Preventive MedicineMonash UniversityMelbourneVictoriaAustralia
| | - Sheree Schwartz
- Department of EpidemiologyJohns Hopkins School of Public HealthBaltimoreMDUSA
| | - Mark A Stoové
- Burnet InstituteMelbourneVictoriaAustralia
- Department of Epidemiology and Preventive MedicineMonash UniversityMelbourneVictoriaAustralia
| | - Stanley Luchters
- Burnet InstituteMelbourneVictoriaAustralia
- Department of Epidemiology and Preventive MedicineMonash UniversityMelbourneVictoriaAustralia
- Department of Population HealthAga Khan UniversityNairobiKenya
- International Centre for Reproductive HealthDepartment of Public Health and Primary CareGhent UniversityGhentBelgium
| | - Stefan Baral
- Department of EpidemiologyJohns Hopkins School of Public HealthBaltimoreMDUSA
| | - Margaret Hellard
- Burnet InstituteMelbourneVictoriaAustralia
- Department of Epidemiology and Preventive MedicineMonash UniversityMelbourneVictoriaAustralia
- Department of Infectious DiseasesThe Alfred HospitalMelbourneVictoriaAustralia
- Doherty Institute and Melbourne School of Population and Global HealthUniversity of MelbourneMelbourneVictoriaAustralia
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16
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Becquet V, Nouaman M, Plazy M, Masumbuko JM, Anoma C, Kouame S, Danel C, Eholie SP, Larmarange J. Sexual health needs of female sex workers in Côte d'Ivoire: a mixed-methods study to prepare the future implementation of pre-exposure prophylaxis (PrEP) for HIV prevention. BMJ Open 2020; 10:e028508. [PMID: 31919122 PMCID: PMC6955511 DOI: 10.1136/bmjopen-2018-028508] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
OBJECTIVE To describe sexual and reproductive health (SRH) needs of female sex workers (FSWs) to inform the future implementation of pre-exposure prophylaxis (PrEP) for HIV prevention in this population. DESIGN AND SETTING The ANRS 12361 PrEP-CI cross-sectional and mixed-methods study was designed and implemented with two community-based organisations in Côte d'Ivoire. PARTICIPANTS A convenience sample of 1000 FSWs aged ≥18, not known as HIV-positive, completed a standardised questionnaire assessing sociodemographic characteristics, sexual practices, use of community health services and a priori acceptability of PrEP. Twenty-two indepth interviews and eight focus group discussions were also conducted to document FSWs' risky practices and sexual behaviours, experiences with violence and discrimination, attitudes regarding HIV and sexually transmitted infections (STIs), and barriers to SRH services. RESULTS Although 87% described consistent condom use with clients, more than 22% declared accepting condomless sexual intercourse for a large sum of money. Furthermore, condom use with their steady partner and knowledge of their partner's HIV status were low despite their acknowledged concurrent sexual partnerships. While inconsistent condom use exposed FSWs to STIs and undesired pregnancies, the prevalence of contraceptive strategies other than condoms was low (39%) due to fear of contraception causing sterility. FSWs faced obstacles to accessing SRH care and preferred advice from their peers or self-medication. CONCLUSIONS Despite adoption of preventive behaviour in most cases, FSWs are still highly exposed to HIV. Furthermore, FSWs seem to face several barriers to accessing SRH. Implementing PrEP among FSWs in West Africa, such as in Côte d'Ivoire, constitutes an opportunity to consider the regular follow-up of HIV-negative FSWs. PrEP initiation should not condition access to SRH services; conversely, SRH services could be a way to attract FSWs into HIV prevention. Our results highlight the importance of developing a people-focused approach that integrates all SRH needs when transitioning from PrEP efficacy trials to implementation.
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Affiliation(s)
- Valentine Becquet
- INED (French Institute for Demographic Studies), Paris, France
- CEPED, Centre for Population and Development, (Paris Descartes University, IRD, Inserm), Paris, France
| | | | - Mélanie Plazy
- ISPED, Inserm Research Center 1219 (Bordeaux Population Health), Université de Bordeaux, Bordeaux, France
| | | | | | | | | | | | - Joseph Larmarange
- CEPED, Centre for Population and Development, (Paris Descartes University, IRD, Inserm), Paris, France
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Vulnerabilities at First Sex and Their Association With Lifetime Gender-Based Violence and HIV Prevalence Among Adolescent Girls and Young Women Engaged in Sex Work, Transactional Sex, and Casual Sex in Kenya. J Acquir Immune Defic Syndr 2019; 79:296-304. [PMID: 30113403 PMCID: PMC6203425 DOI: 10.1097/qai.0000000000001826] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Adolescent girls and young women (AGYW) experience high rates of HIV early in their sexual life course. We estimated the prevalence of HIV-associated vulnerabilities at first sex, and their association with lifetime gender-based violence (GBV) and HIV. METHODS We conducted a cross-sectional biobehavioral survey among AGYW (14-24 years) in Mombasa, Kenya in 2015. We compared the prevalence of first sex vulnerabilities across AGYW who self-identified as engaging in sex work (N = 408), transactional sex (N = 177), or casual sex (N = 714) and used logistic regression to identify age-adjusted associations between first sex vulnerabilities and outcomes (GBV after first sex; HIV). RESULTS The median age at first sex was 16 years (interquartile range 14-18). A total of 43.6% received gifts or money at first sex; 41.2% and 11.2% experienced a coerced and forced first sex, respectively. First sex vulnerabilities were generally more common among AGYW in sex work. GBV (prevalence 23.8%) and HIV (prevalence 5.6%) were associated with first sex before age 15 [GBV adjusted odds ratio (AOR) 1.4, 95% confidence interval (CI): 1.0 to 1.9; HIV AOR 1.9, 95% CI: 1.1 to 1.3]; before or within 1 year of menarche (GBV AOR 1.3, 95% CI: 1.0 to 1.7; HIV AOR 2.1, 95% CI: 1.3 to 3.6); and receipt of money (GBV AOR 1.9, 95% CI: 1.4 to 2.5; HIV AOR 2.0, 95% CI: 1.2 to 3.4). CONCLUSIONS HIV-associated vulnerabilities begin at first sex and potentially mediate an AGYW's trajectory of risk. HIV prevention programs should include structural interventions that reach AGYW early, and screening for a history of first sex vulnerabilities could help identify AGYW at risk of ongoing GBV and HIV.
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Eilami O, Nazari A, Dousti M, Sayehmiri F, Ghasemi M. Investigation of HIV/AIDS prevalence and associated risk factors among female sex workers from 2010 to 2017: a meta-analysis study. HIV AIDS (Auckl) 2019; 11:105-117. [PMID: 31191036 PMCID: PMC6529623 DOI: 10.2147/hiv.s196085] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 04/24/2019] [Indexed: 11/27/2022] Open
Abstract
Objectives: Female sex workers (FSW) are highly at risk of HIV, and can potentially transmit the human immunodeficiency virus (HIV) in different societies. Study design: The aims of the present study were to investigate the prevalence of HIV/AIDS and associated risk factors among FSW between 2010 and 2017 using a systematic literature review and meta-analysis approach. Methods: International databases were searched, including ISI Web of Science, Embase, PubMed, and Scopus. Using the appropriate keywords, relevant studies published on the HIV/AIDS prevalence among FSW between 2010 and 2017 were identified. Afterwards, the information was extracted and analyzed by STATA version 14. Results: Thirty-seven studies were found eligible for inclusion in this research, encompassing a total of 46,657 subjects. The results revealed that the global prevalence of HIV/AIDS among FSW was 2.17 (95% CI=1.37-3.14). Conclusion: These findings demonstrated the high prevalence of HIV/AIDS among FSWs worldwide. Accordingly, strict educational and interventional programs should be implemented globally to reduce HIV/AIDS prevalence among this group, as well as to prevent probable HIV transmission.
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Affiliation(s)
- Owrang Eilami
- Infectious Disease, Faculty of Medicine, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Ali Nazari
- Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Majid Dousti
- Department of Parasitology, Faculty of Medicine, Shiraz University of Medical Sciences, Fars, Iran
| | - Fatemeh Sayehmiri
- Student Research Committee, Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Ghasemi
- Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Recruitment of Female Sex Workers in HIV Prevention Trials: Can Efficacy Endpoints Be Reached More Efficiently? J Acquir Immune Defic Syndr 2019; 77:350-357. [PMID: 29206720 DOI: 10.1097/qai.0000000000001603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND/SETTING Randomized controlled trials (RCTs) of HIV biomedical prevention interventions often enroll participants with varying levels of HIV exposure, including people never exposed to HIV. We assessed whether enrolling larger proportion of participants with consistently high exposure to HIV, such as female sex workers (FSWs), might reduce trial duration and improve the accuracy of product efficacy estimates in future HIV prevention trials. METHODS We used an individual-based stochastic model to simulate event-driven RCTs of an HIV prevention intervention providing 80% reduction in susceptibility per act under different proportions of FSW enrolled. A 5% annual dropout rate was assumed for both FSW and non-FSW in our main scenario, but rates of up to 50% for FSW were also explored. RESULTS Enrolling 20% and 50% FSW reduced the median-simulated trial duration from 30 months with 0% FSW enrolled to 22 months and 17 months, respectively. Estimated efficacy increased from 71% for RCTs without FSW to 74% and 76% for RCTs with 20% and 50% FSW enrolled, respectively. Increasing the FSW dropout rate to 50% increased the duration of RCTs by 1-2 months on average and preserved the gain in estimated efficacy. CONCLUSIONS Despite the potential logistical challenges of recruiting and retaining FSW, trialists should revisit the idea of enrolling FSW in settings where HIV incidence among FSW is higher than among non-FSW. Our analysis suggests that enrolling FSW would increase HIV incidence, reduce trial duration, and improve efficacy estimates, even if the annual dropout rate among FSW participants is high.
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Ampt FH, Willenberg L, Agius PA, Chersich M, Luchters S, Lim MSC. Incidence of unintended pregnancy among female sex workers in low-income and middle-income countries: a systematic review and meta-analysis. BMJ Open 2018; 8:e021779. [PMID: 30224388 PMCID: PMC6144321 DOI: 10.1136/bmjopen-2018-021779] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES To determine the incidence of unintended pregnancy among female sex workers (FSWs) in low-income and middle-income countries (LMICs). DESIGN We searched MEDLINE, PsychInfo, Embase and Popline for papers published in English between January 2000 and January 2016, and Web of Science and Proquest for conference abstracts. Meta-analysis was performed on the primary outcomes using random effects models, with subgroup analysis used to explore heterogeneity. PARTICIPANTS Eligible studies targeted FSWs aged 15-49 years living or working in an LMIC. OUTCOME MEASURES Studies were eligible if they provided data on one of two primary outcomes: incidence of unintended pregnancy and incidence of pregnancy where intention is undefined. Secondary outcomes were also extracted when they were reported in included studies: incidence of induced abortion; incidence of birth; and correlates/predictors of pregnancy or unintended pregnancy. RESULTS Twenty-five eligible studies were identified from 3866 articles. Methodological quality was low overall. Unintended pregnancy incidence showed high heterogeneity (I²>95%), ranging from 7.2 to 59.6 per 100 person-years across 10 studies. Study design and duration were found to account for heterogeneity. On subgroup analysis, the three cohort studies in which no intervention was introduced had a pooled incidence of 27.1 per 100 person-years (95% CI 24.4 to 29.8; I2=0%). Incidence of pregnancy (intention undefined) was also highly heterogeneous, ranging from 2.0 to 23.4 per 100 person-years (15 studies). CONCLUSIONS Of the many studies examining FSWs' sexual and reproductive health in LMICs, very few measured pregnancy and fewer assessed pregnancy intention. Incidence varied widely, likely due to differences in study design, duration and baseline population risk, but was high in most studies, representing a considerable concern for this key population. Evidence-based approaches that place greater importance on unintended pregnancy prevention need to be incorporated into existing sexual and reproductive health programmes for FSWs. PROSPERO REGISTRATION NUMBER CRD42016029185.
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Affiliation(s)
- Frances H Ampt
- Burnet Institute, Melbourne, Victoria, Australia
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
| | | | - Paul A Agius
- Burnet Institute, Melbourne, Victoria, Australia
- Judith Lumley Centre, La Trobe University, Melbourne, Victoria, Australia
| | - Matthew Chersich
- Faculty of Health Sciences, Wits Reproductive Health and HIV Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - Stanley Luchters
- Burnet Institute, Melbourne, Victoria, Australia
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
- Department of Obstetrics and Gynaecology, International Centre for Reproductive Health, Universiteit Gent, Ghent, Belgium
| | - Megan S C Lim
- Burnet Institute, Melbourne, Victoria, Australia
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
- Melbourne School of Global and Population Health, University of Melbourne, Melbourne, Victoria, Australia
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Diabaté S, Chamberland A, Geraldo N, Tremblay C, Alary M. Gonorrhea, Chlamydia and HIV incidence among female sex workers in Cotonou, Benin: A longitudinal study. PLoS One 2018; 13:e0197251. [PMID: 29746535 PMCID: PMC5945000 DOI: 10.1371/journal.pone.0197251] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 04/30/2018] [Indexed: 12/04/2022] Open
Abstract
Female sex workers (FSWs) continue to carry a heavy burden of sexually transmitted infections (STI). For prevention purposes, there is a need to identify most-at-risk subgroups among them. The objective of this longitudinal cohort study conducted at Dispensaire IST, Cotonou, Benin, was to assess Neisseria gonorrhoeae (NG) / Chlamydia trachomatis (CT) incidence and determinants; and HIV incidence among FSWs in presence of STI/HIV risk reduction activities. Overall, 319 adult FSWs were followed quarterly from September 2008 to March 2012. NG/CT were detected from endocervical swabs by Amplified DNA Assays employing Strand displacement amplification technology. HIV testing was done on capillary blood using two consecutive rapid diagnostic tests. Anderson-Gill proportional hazard models (HR) were used to determine factors independently associated with NG/CT incidence. The majority of FSWs were HIV-negative (188, 58.9%). There were 6 HIV seroconversions among these 188 HIV-negative women. HIV incidence (95% Confidence interval, CI) was 1.41 (0.28–2.54) seroconversions per 100 person-years at risk (PYAR): 6 events / 425.1 PYAR. Sixty-two out of 319 women experienced 83 new episodes of NG/CT for an overall incidence rate (95% CI) of 10.8 (8.17–13.88) events / 100 PYAR. From month-24 onwards, HIV-positive women (treated: HR (95%CI): 4.2 (1.60–10.77); untreated: HR (95%CI): 4.2 (1.59–11.49) were more likely to acquire NG/CT compared to HIV-negative FSWs. Longer duration in sex work (>2 years: HR; 95%CI: 0.4 (0.22–0.72)) was protective against NG/CT. Refusal by clients (55.8%) was the main reason for non-condom use. Enrolling women from one clinic (Dispensaire IST) may have impaired generalizability of the findings. New NG/CT/HIV infections were observed among FSWs notwithstanding ongoing prevention interventions. To eliminate HIV transmission among FSWs, STI/HIV control programs need to promote women’s empowerment and address vulnerability to infection of HIV-positive FSWs.
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Affiliation(s)
- Souleymane Diabaté
- Axe Santé des populations et pratiques optimales en santé, Centre de recherche du CHU de Québec–Université Laval, Québec, Québec, Canada
- Département de médecine sociale et préventive, Université Laval, Québec, Québec, Canada
- Département d’infectiologie et santé publique, Université Alassane Ouattara, Bouaké, Côte d’Ivoire
- * E-mail:
| | - Annie Chamberland
- Centre de recherche du Centre hospitalier universitaire de Montréal, Montréal, Québec, Canada
| | | | - Cécile Tremblay
- Centre de recherche du Centre hospitalier universitaire de Montréal, Montréal, Québec, Canada
| | - Michel Alary
- Axe Santé des populations et pratiques optimales en santé, Centre de recherche du CHU de Québec–Université Laval, Québec, Québec, Canada
- Département de médecine sociale et préventive, Université Laval, Québec, Québec, Canada
- Institut national de santé publique du Québec, Québec, Québec, Canada
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Dubbink JH, Verweij SP, Struthers HE, Ouburg S, McIntyre JA, Morré SA, Peters RP. Genital Chlamydia trachomatis and Neisseria gonorrhoeae infections among women in sub-Saharan Africa: A structured review. Int J STD AIDS 2018; 29:806-824. [PMID: 29486628 DOI: 10.1177/0956462418758224] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Chlamydia trachomatis and Neisseria gonorrhoeae constitute major public health problems among women, but the burden of infection in sub-Saharan Africa is poorly documented. We conducted a structured review of the prevalence and incidence of genital, oral and anal C. trachomatis and N. gonorrhoeae infection in women in sub-Saharan Africa. We searched Medline, EMBASE and Web of Science over a 10-year period for studies on epidemiology of genital, oral and anal chlamydial infection and gonorrhoea in women in all countries of sub-Saharan Africa. We assessed geographic and demographic differences in prevalence and incidence of infection; weighted mean prevalence estimates were calculated with a random-effect model. A total of 102 study results were included, with data available for 24/49 of sub-Saharan countries. The weighted prevalence of chlamydial infection was lower among women in community-based studies (3.9%; 95% CI: 2.9-5.1%) than for women recruited at primary healthcare facilities (6.0%; 95% CI: 4.2-8.4%, p < 0.001); the same was observed for gonorrhoea (2.2%; 95% CI: 1.2-4.0% vs. 4.2%; 95% CI: 3.2-5.6%, p < 0.001). Prevalence of Chlamydia among sex workers was 5.5% (95% CI: 4.2-7.3%) and gonorrhoea 7.6% (95% CI: 5.4-11%). Seven studies reported on incidence which varied between 0.75-28 and 2.8-17 per 100 person-years-at-risk for chlamydial infection and gonorrhoea, respectively. Only two studies reported on anal infections and one on oral infection. This overview underscores the considerable incidence and prevalence of genital C. trachomatis and N. gonorrhoeae in women in different settings in sub-Saharan Africa. Better control strategies are warranted to reduce the burden of infection and to prevent long-term complications of these infections.
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Affiliation(s)
- Jan Henk Dubbink
- 1 Anova Health Institute, Johannesburg, South Africa.,2 Department of Medical Microbiology & Infection Control, Laboratory of Immunogenetics, VU University Medical Center, Amsterdam, the Netherlands.,3 Faculty of Health, Medicine & Life Sciences, Department of Genetics and Cell Biology, Institute for Public Health Genomics (IPHG), Research School GROW (School for Oncology & Developmental Biology), University of Maastricht, Maastricht, the Netherlands
| | - Stephan P Verweij
- 2 Department of Medical Microbiology & Infection Control, Laboratory of Immunogenetics, VU University Medical Center, Amsterdam, the Netherlands
| | - Helen E Struthers
- 1 Anova Health Institute, Johannesburg, South Africa.,4 Division of Infectious Diseases & HIV Medicine, Department of Internal Medicine, University of Cape Town, Cape Town, South Africa
| | - Sander Ouburg
- 2 Department of Medical Microbiology & Infection Control, Laboratory of Immunogenetics, VU University Medical Center, Amsterdam, the Netherlands
| | - James A McIntyre
- 1 Anova Health Institute, Johannesburg, South Africa.,5 School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Servaas A Morré
- 2 Department of Medical Microbiology & Infection Control, Laboratory of Immunogenetics, VU University Medical Center, Amsterdam, the Netherlands.,3 Faculty of Health, Medicine & Life Sciences, Department of Genetics and Cell Biology, Institute for Public Health Genomics (IPHG), Research School GROW (School for Oncology & Developmental Biology), University of Maastricht, Maastricht, the Netherlands
| | - Remco Ph Peters
- 1 Anova Health Institute, Johannesburg, South Africa.,6 Department of Medical Microbiology, University of Pretoria, Pretoria, South Africa
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Looker KJ, Elmes JAR, Gottlieb SL, Schiffer JT, Vickerman P, Turner KME, Boily MC. Effect of HSV-2 infection on subsequent HIV acquisition: an updated systematic review and meta-analysis. THE LANCET. INFECTIOUS DISEASES 2017; 17:1303-1316. [PMID: 28843576 PMCID: PMC5700807 DOI: 10.1016/s1473-3099(17)30405-x] [Citation(s) in RCA: 166] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 06/13/2017] [Accepted: 06/27/2017] [Indexed: 11/17/2022]
Abstract
Background HIV and herpes simplex virus type 2 (HSV-2) infections cause a substantial global disease burden and are epidemiologically correlated. Two previous systematic reviews of the association between HSV-2 and HIV found evidence that HSV-2 infection increases the risk of HIV acquisition, but these reviews are now more than a decade old. Methods For this systematic review and meta-analysis, we searched PubMed, MEDLINE, and Embase (from Jan 1, 2003, to May 25, 2017) to identify studies investigating the risk of HIV acquisition after exposure to HSV-2 infection, either at baseline (prevalent HSV-2 infection) or during follow-up (incident HSV-2 infection). Studies were included if they were a cohort study, controlled trial, or case-control study (including case-control studies nested within a cohort study or clinical trial); if they assessed the effect of pre-existing HSV-2 infection on HIV acquisition; and if they determined the HSV-2 infection status of study participants with a type-specific assay. We calculated pooled random-effect estimates of the association between prevalent or incident HSV-2 infection and HIV seroconversion. We also extended previous investigations through detailed meta-regression and subgroup analyses. In particular, we investigated the effect of sex and risk group (general population vs higher-risk populations) on the relative risk (RR) of HIV acquisition after prevalent or incident HSV-2 infection. Higher-risk populations included female sex workers and their clients, men who have sex with men, serodiscordant couples, and attendees of sexually transmitted infection clinics. Findings We identified 57 longitudinal studies exploring the association between HSV-2 and HIV. HIV acquisition was almost tripled in the presence of prevalent HSV-2 infection among general populations (adjusted RR 2·7, 95% CI 2·2–3·4; number of estimates [Ne]=22) and was roughly doubled among higher-risk populations (1·7, 1·4–2·1; Ne=25). Incident HSV-2 infection in general populations was associated with the highest risk of acquisition of HIV (4·7, 2·2–10·1; Ne=6). Adjustment for confounders at the study level was often incomplete but did not significantly affect the results. We found moderate heterogeneity across study estimates, which was explained by risk group, world region, and HSV-2 exposure type (prevalent vs incident). Interpretation We found evidence that HSV-2 infection increases the risk of HIV acquisition. This finding has important implications for management of individuals diagnosed with HSV-2 infection, particularly for those who are newly infected. Interventions targeting HSV-2, such as new HSV vaccines, have the potential for additional benefit against HIV, which could be particularly powerful in regions with a high incidence of co-infection. Funding World Health Organization.
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Affiliation(s)
- Katharine J Looker
- School of Social and Community Medicine, University of Bristol, Bristol, UK.
| | - Jocelyn A R Elmes
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK
| | - Sami L Gottlieb
- Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland
| | - Joshua T Schiffer
- Vaccine and Infectious Disease Division, and Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA; Department of Medicine, University of Washington, Seattle, WA, USA
| | - Peter Vickerman
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | | | - Marie-Claude Boily
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK
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Ampt FH, Mudogo C, Gichangi P, Lim MSC, Manguro G, Chersich M, Jaoko W, Temmerman M, Laini M, Comrie-Thomson L, Stoové M, Agius PA, Hellard M, L’Engle K, Luchters S. WHISPER or SHOUT study: protocol of a cluster-randomised controlled trial assessing mHealth sexual reproductive health and nutrition interventions among female sex workers in Mombasa, Kenya. BMJ Open 2017; 7:e017388. [PMID: 28821530 PMCID: PMC5724193 DOI: 10.1136/bmjopen-2017-017388] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
INTRODUCTION New interventions are required to reduce unintended pregnancies among female sex workers (FSWs) in low- and middle-income countries and to improve their nutritional health. Given sex workers' high mobile phone usage, repeated exposure to short messaging service (SMS) messages could address individual and interpersonal barriers to contraceptive uptake and better nutrition. METHODS In this two-arm cluster randomised trial, each arm constitutes an equal-attention control group for the other. SMS messages were developed systematically, participatory and theory-driven and cover either sexual and reproductive health (WHISPER) or nutrition (SHOUT). Messages are sent to participants 2-3 times/week for 12 months and include fact-based and motivational content as well as role model stories. Participants can send reply texts to obtain additional information. Sex work venues (clusters) in Mombasa, Kenya, were randomly sampled with a probability proportionate to venue size. Up to 10 women were recruited from each venue to enrol 860 women. FSWs aged 16-35 years, who owned a mobile phone and were not pregnant at enrolment were eligible. Structured questionnaires, pregnancy tests, HIV and syphilis rapid tests and full blood counts were performed at enrolment, with subsequent visits at 6 and 12 months. ANALYSIS The primary outcomes of WHISPER and SHOUT are unintended pregnancy incidence and prevalence of anaemia at 12 months, respectively. Each will be compared between study groups using discrete-time survival analysis. POTENTIAL LIMITATIONS Contamination may occur if participants discuss their intervention with those in the other trial arm. This is mitigated by cluster recruitment and only sampling a small proportion of sex work venues from the sampling frame. CONCLUSIONS The design allows for the simultaneous testing of two independent mHealth interventions for which messaging frequency and study procedures are identical. This trial may guide future mHealth initiatives and provide methodological insights into use of reciprocal control groups. TRIAL REGISTRATION NUMBER ACTRN12616000852459; Pre-results.
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Affiliation(s)
- Frances H Ampt
- Burnet Institute, Melbourne, Australia
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
| | - Collins Mudogo
- International Centre for Reproductive Health (ICRH), Mombasa, Kenya
| | - Peter Gichangi
- International Centre for Reproductive Health (ICRH), Mombasa, Kenya
- University of Nairobi, Mombasa, Kenya
- Department of Obstetrics and Gynaecology, International Centre for Reproductive Health (ICRH), Ghent University, Ghent, Belgium
| | - Megan S C Lim
- Burnet Institute, Melbourne, Australia
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
| | - Griffins Manguro
- International Centre for Reproductive Health (ICRH), Mombasa, Kenya
| | - Matthew Chersich
- Wits Reproductive Health and HIV Institute, University of the Witwatersrand, Johannesburg, South Africa
| | | | - Marleen Temmerman
- International Centre for Reproductive Health (ICRH), Mombasa, Kenya
- Department of Obstetrics and Gynaecology, International Centre for Reproductive Health (ICRH), Ghent University, Ghent, Belgium
- Aga Khan University, Nairobi, Kenya
| | - Marilyn Laini
- International Centre for Reproductive Health (ICRH), Mombasa, Kenya
| | | | | | - Paul A Agius
- Burnet Institute, Melbourne, Australia
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
- Judith Lumley Centre, La Trobe University, Melbourne, Australia
| | | | - Kelly L’Engle
- University of San Francisco, San Francisco, California, USA
| | - Stanley Luchters
- Burnet Institute, Melbourne, Australia
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
- Department of Obstetrics and Gynaecology, International Centre for Reproductive Health (ICRH), Ghent University, Ghent, Belgium
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Mutagoma M, Nyirazinyoye L, Sebuhoro D, Riedel DJ, Ntaganira J. Syphilis and HIV prevalence and associated factors to their co-infection, hepatitis B and hepatitis C viruses prevalence among female sex workers in Rwanda. BMC Infect Dis 2017; 17:525. [PMID: 28754104 PMCID: PMC5534065 DOI: 10.1186/s12879-017-2625-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 07/20/2017] [Indexed: 12/13/2022] Open
Abstract
Background Human Immunodeficiency Virus (HIV), syphilis, Hepatitis B Virus (HBV) and Hepatitis C Virus (HCV) are sexually transmitted infections (STIs) and share modes of transmission. These infections are generally more prevalent among female sex workers (FSWs). Methods This is a cross-sectional study conducted among female sex workers (FSWs) in Rwanda in 2015. Venue-Day-Time (VDT) sampling method was used in recruiting participants. HIV, syphilis, HBV, and HCV testing were performed. Descriptive analyses and logistic regression models were computed. Results In total, 1978 FSWs were recruited. The majority (58.5%) was aged between 20 and 29 years old. Up to 63.9% of FSWs were single, 62.3% attained primary school, and 68.0% had no additional occupation beside sex work. Almost all FSWs (81.2%) had children. The majority of FSWs (68.4%) were venue-based, and most (53.5%) had spent less than five years in sex work. The overall prevalence of syphilis was 51.1%; it was 2.5% for HBV, 1.4% for HCV, 42.9% for HIV and 27.4% for syphilis/HIV co-infection. The prevalence of syphilis, HIV, and syphilis + HIV co-infection was increasing with age and decreasing with the level of education. A positive association with syphilis/HIV co-infection was found in: 25 years and older (aOR = 1.82 [95% CI:1.33–2.50]), having had a genital sore in the last 12 months (aOR = 1.34 [95% CI:1.05–1.71]), and having HBsAg-positive test (aOR = 2.09 [1.08–4.08]). Conclusion The prevalence of HIV and syphilis infections and HIV/syphilis co-infection are very high among FSWs in Rwanda. A strong, specific prevention program for FSWs and to avert HIV infection and other STIs transmission to their clients is needed.
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Affiliation(s)
- Mwumvaneza Mutagoma
- Rwanda Biomedical Centre, Ministry of Health, P. O. Box, 7162, Kigali, Rwanda. .,University of Rwanda, College of Medicine and Health Sciences, School of Public Health, Kigali, Rwanda.
| | - Laetitia Nyirazinyoye
- University of Rwanda, College of Medicine and Health Sciences, School of Public Health, Kigali, Rwanda
| | - Dieudonné Sebuhoro
- Rwanda Biomedical Centre, Ministry of Health, P. O. Box, 7162, Kigali, Rwanda
| | - David J Riedel
- Institute of Human Virology and Division of Infectious Diseases, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Joseph Ntaganira
- University of Rwanda, College of Medicine and Health Sciences, School of Public Health, Kigali, Rwanda
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Kridin K, Grifat R, Khamaisi M. Is there an ethnic variation in the epidemiology of gonorrhoea? A retrospective population-based study from northern Israel over 15 years between 2001 and 2015. BMJ Open 2017. [PMID: 28645955 PMCID: PMC5541475 DOI: 10.1136/bmjopen-2016-014265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE To investigate the trends in the incidence of gonorrhoea through an extended period of time and to compare the epidemiology of gonorrhoea infection between 2 distinct ethnic groups (Jews and Arabs). DESIGN A retrospective population-based cohort study was conducted on all consecutive patients diagnosed with gonorrhoea through the years 2001-2015. SETTING National Department of Epidemiology of the Ministry of Health, Haifa District, Israel. PARTICIPANTS A total of 837 reports on gonorrhoea were received, derived from 779 (93.1%) male and 58 (6.9%) female patients. Approximately 1 million people reside in the Haifa region. PRIMARY AND SECONDARY OUTCOME MEASURES We examined the incidence rate of gonorrhoea among residents of Haifa District, northern Israel from 2001 to 2015, by reviewing archives of the Department of Epidemiology, Israeli Ministry of Health. Notified cases were stratified by age, gender and ethnicity. RESULTS The overall gonorrhoea incidence was 6.4 cases per 100 000 population per year. The annual incidence rate dropped from 20.5 per 100 000 population in 2001 to a period of 2.2 cases per 100 000 population in 2005, showing a >9-fold decline. This was followed by a relatively steady increase of incidence of 2.5-4.5 per 100 000 population from 2006 to 2015. Men were predominantly more affected than women, with a 13.4-fold higher incidence rate. The most affected age group was residents between 25 and 34 years old. The estimated rate among Jews was 2.5-fold higher relative to Arabs. Only 1.3% recurrent episodes of gonorrhoea were reported. The prevalence of HIV positivity among patients with gonorrhoea is significantly higher than that of the general population (500.0 vs 88.1 cases per 100 000 population, respectively, p<0.001). CONCLUSIONS Gonorrhoea incidence rate decreased dramatically until 2005, with no substantial subsequent fluctuations. The infection is much more prevalent among patients of Jewish ethnicity, possibly due to riskier sex practices.
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Affiliation(s)
- Khalaf Kridin
- Department of Dermatology, Rambam Health Care Campus, Haifa, Israel
| | - Rami Grifat
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
- Haifa District Office, Ministry of Health, Haifa, Israel
| | - Mogher Khamaisi
- Diabetes and Metabolism and Internal Medicine D, Institute of Endocrinology, Rambam Health Care Campus, Haifa, Israel
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Ippoliti NB, Nanda G, Wilcher R. Meeting the Reproductive Health Needs of Female Key Populations Affected by HIV in Low- and Middle-Income Countries: A Review of the Evidence. Stud Fam Plann 2017; 48:121-151. [PMID: 28422301 DOI: 10.1111/sifp.12020] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Female sex workers and other women at high risk of acquiring HIV have the right to sexual and reproductive health, including the right to determine the number and timing of pregnancies. We conducted a literature review to examine the data that exist regarding the family planning and reproductive health needs of female key populations, the underlying determinants of these populations' vulnerability to poor reproductive health outcomes, and the obstacles they face in accessing high-quality reproductive health services. Findings indicate that female key populations experience high rates of unmet need for family planning and safer conception services, unintended pregnancies, sexual violence, and abortion, and that they practice inconsistent condom use. Restrictive policy environments, stigma and discrimination in health care settings, gender inequality, and economic marginalization restrict access to services and undermine the ability to safely achieve reproductive intentions. We offer recommendations for structural, health system, community, and individual-level interventions that can mitigate the effects of these barriers and improve reproductive health outcomes.
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Mutagoma M, Samuel MS, Kayitesi C, Gasasira AR, Chitou B, Boer K, Hedt-Gauthier B, Gupta N, Ntaganira J, Nsanzimana S. High HIV prevalence and associated risk factors among female sex workers in Rwanda. Int J STD AIDS 2017; 28:1082-1089. [PMID: 28081683 DOI: 10.1177/0956462416688137] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Human immunodeficiency virus (HIV) prevalence is often high among female sex workers (FSWs) in sub-Saharan Africa. Understanding the dynamics of HIV infection in this key population is critical to developing appropriate prevention strategies. We aimed to describe the prevalence and associated risk factors among a sample of FSWs in Rwanda from a survey conducted in 2010. A cross-sectional biological and behavioral survey was conducted among FSWs in Rwanda. Time-location sampling was used for participant recruitment from 4 to 18 February 2010. HIV testing was done using HIV rapid diagnostic tests (RDT) as per Rwandan national guidelines at the time of the survey. Elisa tests were simultaneously done on all samples tested HIV-positive on RDT. Proportions were used for sample description; multivariable logistic regression model was performed to analyze factors associated with HIV infection. Of 1338 women included in the study, 1112 consented to HIV testing, and the overall HIV prevalence was 51.0%. Sixty percent had been engaged in sex work for less than five years and 80% were street based. In multivariable logistic regression, HIV prevalence was higher in FSWs 25 years or older (adjusted odds ratio [aOR] = 1.83, 95% [confidence interval (CI): 1.42-2.37]), FSWs with consistent condom use in the last 30 days (aOR = 1.39, [95% CI: 1.05-1.82]), and FSWs experiencing at least one STI symptom in the last 12 months (aOR = 1.74 [95% CI: 1.34-2.26]). There was an inverse relationship between HIV prevalence and comprehensive HIV knowledge (aOR = 0.65, [95% CI: 0.48-0.88]). HIV prevalence was high among a sample of FSWs in Rwanda, and successful prevention strategies should focus on HIV education, treatment of sexually transmitted infections, and proper and consistent condom use using an outreach approach.
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Affiliation(s)
| | - Malamba S Samuel
- 2 U.S. Centers for Disease Control and Prevention (CDC), Center for Global Health (CGH), Division of Global HIV/AIDS (DGHA), Kigali, Rwanda
| | | | - Antoine R Gasasira
- 2 U.S. Centers for Disease Control and Prevention (CDC), Center for Global Health (CGH), Division of Global HIV/AIDS (DGHA), Kigali, Rwanda
| | - Bassirou Chitou
- 2 U.S. Centers for Disease Control and Prevention (CDC), Center for Global Health (CGH), Division of Global HIV/AIDS (DGHA), Kigali, Rwanda
| | - Kimberly Boer
- 2 U.S. Centers for Disease Control and Prevention (CDC), Center for Global Health (CGH), Division of Global HIV/AIDS (DGHA), Kigali, Rwanda
| | - Bethany Hedt-Gauthier
- 3 Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA, USA.,4 Partners In Health, Rwinkwavu, Rwanda
| | - Neil Gupta
- 4 Partners In Health, Rwinkwavu, Rwanda.,5 Division of Global Health Equity, Brigham & Women's Hospital, Boston, MA, USA
| | | | - Sabin Nsanzimana
- 1 Rwanda Biomedical Center, Ministry of Health, Kigali, Rwanda.,7 Basel Clinical Epidemiology and Biostatistics Institute and Swiss Tropical and Public Health institute, University of Basel, Basel, Switzerland
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Luchters S, Bosire W, Feng A, Richter ML, King’ola N, Ampt F, Temmerman M, Chersich MF. "A Baby Was an Added Burden": Predictors and Consequences of Unintended Pregnancies for Female Sex Workers in Mombasa, Kenya: A Mixed-Methods Study. PLoS One 2016; 11:e0162871. [PMID: 27689699 PMCID: PMC5045288 DOI: 10.1371/journal.pone.0162871] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 08/30/2016] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION Female sex workers (FSW) have high rates of unintended pregnancy, sexually transmitted infections including HIV, and other adverse sexual and reproductive health outcomes. Few services for FSWs include contraception. This mixed-methods study aimed to determine the rate, predictors and consequences of unintended pregnancy among FSWs in Mombasa, Kenya. METHODS A prospective cohort study of non-pregnant FSWs was conducted. Quantitative data were collected quarterly, including a structured questionnaire and testing for pregnancy and HIV. Predictors of unintended pregnancy were investigated using multivariate logistic regression. Qualitative data were gathered through focus group discussions and in-depth interviews with FSWs who became pregnant during the study, and interviews with five key informants. These data were transcribed, translated and analysed thematically. RESULTS Four hundred women were enrolled, with 92% remaining in the cohort after one year. Fifty-seven percent reported using a modern contraceptive method (including condoms when used consistently). Over one-third (36%) of women were using condoms inconsistently without another method. Twenty-four percent had an unintended pregnancy during the study. Younger age, having an emotional partner and using traditional or no contraception, or condoms only, were independent predictors of unintended pregnancy. Women attributed pregnancy to forgetting to use contraception and being pressured not to by clients and emotional partners, as well as "bad luck". They described numerous negative consequences of unintended pregnancy. CONCLUSION Modern contraceptive uptake is surprisingly low in this at-risk population, which in turn has a high rate of unintended pregnancy. The latter may result in financial hardship, social stigma, risk of abandonment, or dangerous abortion practices. FSWs face considerable barriers to the adoption of dual method contraceptive use, including low levels of control in their emotional and commercial relationships. Reproductive health services need to be incorporated into programs for sexually transmitted infections and HIV, which address the socially-determined barriers to contraceptive use.
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Affiliation(s)
- Stanley Luchters
- Burnet Institute, Melbourne, Australia
- International Centre for Reproductive Health (ICRH), Department of Obstetrics and Gynaecology, Ghent University, Ghent, Belgium
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, Australia
- * E-mail:
| | - Wilkister Bosire
- International Centre for Reproductive Health (ICRH), Mombasa, Kenya
| | - Amy Feng
- Department of Obstetrics and Gynaecology, The Royal Women’s Hospital, Melbourne, Australia
| | - Marlise L. Richter
- Department of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
- African Centre for Migration & Society, University of the Witwatersrand, Johannesburg, South Africa
| | - Nzioki King’ola
- International Centre for Reproductive Health (ICRH), Mombasa, Kenya
| | - Frances Ampt
- Burnet Institute, Melbourne, Australia
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, Australia
| | - Marleen Temmerman
- International Centre for Reproductive Health (ICRH), Department of Obstetrics and Gynaecology, Ghent University, Ghent, Belgium
- Department of Reproductive Health Research, World Health Organization, Geneva, Switzerland
| | - Matthew F. Chersich
- International Centre for Reproductive Health (ICRH), Department of Obstetrics and Gynaecology, Ghent University, Ghent, Belgium
- Centre for Health Policy, School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Wits Reproductive Health and HIV Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Carlos S, Nzakimuena F, Reina G, Lopez-Del Burgo C, Burgueño E, Ndarabu A, Osorio A, de Irala J. Factors that lead to changes in sexual behaviours after a negative HIV test: protocol for a prospective cohort study in Kinshasa. BMC Public Health 2016; 16:606. [PMID: 27439981 PMCID: PMC4955130 DOI: 10.1186/s12889-016-3285-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 07/08/2016] [Indexed: 01/08/2023] Open
Abstract
Background Considering the high percentage of couples in which one or both members are HIV negative, the frequency of transmission among non-regular partners and the probabilities of non-disclosure, attention should be paid to people getting a negative HIV test at the Voluntary Counseling and Testing (VCT). Research has shown that a negative HIV test may be followed by a change in sexual behaviours. In Sub-Saharan Africa, where most HIV infections occur, there are few studies that have analysed the factors associated with changes in sexual risk behaviours after a negative HIV test at the VCT clinic. The aim of this project is to evaluate the specific factors associated with changes in sexual behaviours, three months after a negative result in an HIV test, and to analyse the effect of counseling and testing on HIV-related knowledge of participants in an outpatient centre of Kinshasa (Democratic Republic of Congo). Methods and design Prospective cohort study from December 2014 until March 2016. People 15–60 year old that received VCT at Monkole Hospital (Kinshasa) were followed three months after they got a negative HIV test. In a face-to-face interview, participants replied to a baseline and a follow-up research questionnaire on HIV-related knowledge, attitudes and behaviours. At follow-up respondents were also offered a new HIV test and additional HIV counseling. Four hundred and fifteen participants completed the baseline questionnaire and 363 (87 %) came back for their 3-month follow up. Discussion This is the first longitudinal study in the DRC that evaluates the factors associated with changes in sexual behaviours after a negative HIV test at the VCT. Participants attending the VCT services within a clinical setting are a good study population as they can be good transmitters of preventive information for other people with no access to health facilities.
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Affiliation(s)
- Silvia Carlos
- University of Navarra, Department of Preventive Medicine and Public Health, C/Irunlarrea, 1. 31080, Pamplona, Spain. .,IdiSNA, Navarra Institute for Health Research, Pamplona, Spain. .,University of Navarra, Institute for Culture and Society (ICS), Education of Affectivity and Human Sexuality, Pamplona, Spain.
| | - Francis Nzakimuena
- CECFOR/Monkole Hospital, Kinshasa, Democratic Republic of Congo.,University of Kinshasa, School of Public Health, Kinshasa, Democratic Republic of Congo
| | - Gabriel Reina
- IdiSNA, Navarra Institute for Health Research, Pamplona, Spain.,Clinic University of Navarra, Clinical Microbiology Department, Pamplona, Spain
| | - Cristina Lopez-Del Burgo
- University of Navarra, Department of Preventive Medicine and Public Health, C/Irunlarrea, 1. 31080, Pamplona, Spain.,IdiSNA, Navarra Institute for Health Research, Pamplona, Spain.,University of Navarra, Institute for Culture and Society (ICS), Education of Affectivity and Human Sexuality, Pamplona, Spain
| | - Eduardo Burgueño
- University of Navarra, Department of Preventive Medicine and Public Health, C/Irunlarrea, 1. 31080, Pamplona, Spain.,CECFOR/Monkole Hospital, Kinshasa, Democratic Republic of Congo
| | - Adolphe Ndarabu
- CECFOR/Monkole Hospital, Kinshasa, Democratic Republic of Congo
| | - Alfonso Osorio
- IdiSNA, Navarra Institute for Health Research, Pamplona, Spain.,University of Navarra, Institute for Culture and Society (ICS), Education of Affectivity and Human Sexuality, Pamplona, Spain.,University of Navarra, School of Education and Psychology, Pamplona, Spain
| | - Jokin de Irala
- University of Navarra, Department of Preventive Medicine and Public Health, C/Irunlarrea, 1. 31080, Pamplona, Spain.,IdiSNA, Navarra Institute for Health Research, Pamplona, Spain.,University of Navarra, Institute for Culture and Society (ICS), Education of Affectivity and Human Sexuality, Pamplona, Spain
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Kirkcaldy RD, Harvey A, Papp JR, Del Rio C, Soge OO, Holmes KK, Hook EW, Kubin G, Riedel S, Zenilman J, Pettus K, Sanders T, Sharpe S, Torrone E. Neisseria gonorrhoeae Antimicrobial Susceptibility Surveillance - The Gonococcal Isolate Surveillance Project, 27 Sites, United States, 2014. MMWR. SURVEILLANCE SUMMARIES : MORBIDITY AND MORTALITY WEEKLY REPORT. SURVEILLANCE SUMMARIES 2016; 65:1-19. [PMID: 27414503 DOI: 10.15585/mmwr.ss6507a1] [Citation(s) in RCA: 176] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
PROBLEM/CONDITION Gonorrhea is the second most commonly reported notifiable disease in the United States; 350,062 gonorrhea cases were reported in 2014. Sexually transmitted infections caused by Neisseria gonorrhoeae are a cause of pelvic inflammatory disease in women, which can lead to serious reproductive complications including tubal infertility, ectopic pregnancy, and chronic pelvic pain. Prevention of sequelae and of transmission to sexual partners relies largely on prompt detection and effective antimicrobial treatment. However, treatment has been compromised by the absence of routine antimicrobial susceptibility testing in clinical care and evolution of antimicrobial resistance to the antibiotics used to treat gonorrhea. PERIOD COVERED 2014. DESCRIPTION OF THE SYSTEM The Gonococcal Isolate Surveillance Project (GISP) was established in 1986 as a sentinel surveillance system to monitor trends in antimicrobial susceptibilities of N. gonorrhoeae strains in the United States. Each month, N. gonorrhoeae isolates are collected from up to the first 25 men with gonococcal urethritis attending each of the participating sexually transmitted disease (STD) clinics at 27 sites. The number of participating sites has varied over time (21-30 per year). Selected demographic and clinical data are abstracted from medical records. Isolates are tested for antimicrobial susceptibility using agar dilution at one of five regional laboratories. RESULTS A total of 5,093 isolates were collected in 2014. Of these, 25.3% were resistant to tetracycline, 19.2% to ciprofloxacin, and 16.2% to penicillin (plasmid-based, chromosomal, or both). Reduced azithromycin susceptibility (Azi-RS) (defined as minimum inhibitory concentration [MIC] ≥2.0 µg/mL) increased from 0.6% in 2013 to 2.5% in 2014. The increase occurred in all geographic regions, but was greatest in the Midwest, and among all categories of sex of sex partners (men who have sex with men [MSM], men who have sex with men and women [MSMW], and men who have sex with women [MSW]). No Azi-RS isolates exhibited reduced cefixime or ceftriaxone susceptibility (Cfx-RS and Cro-RS, respectively). The prevalence of Cfx-RS (MIC ≥0.25 µg/mL) increased from 0.1% in 2006 to 1.4% in both 2010 and 2011, decreased to 0.4% in 2013, and increased to 0.8% in 2014. Cro-RS (MIC ≥0.125 µg/mL) increased following a similar pattern but at lesser percentages (increased from 0.1% in 2008 to 0.4% in 2011 and decreased to 0.1% in 2013 and 2014). The percentage of isolates resistant to tetracycline, ciprofloxacin, penicillin, or all three antimicrobials, was greater in isolates from MSM than from MSW. INTERPRETATION This is the first report to present comprehensive surveillance data from GISP and summarize gonococcal susceptibility over time, as well as underscore the history and public health implications of emerging cephalosporin resistance. Antimicrobial susceptibility patterns vary by geographic region within the United States and by sex of sex partner. Because dual therapy with ceftriaxone plus azithromycin is the only recommended gonorrhea treatment, increases in azithromycin and cephalosporin MICs are cause for concern that resistance to these antimicrobial agents might be emerging. It is unclear whether increases in the percentage of isolates with Azi-RS mark the beginning of a trend. The percentage of isolates with elevated cefixime MICs increased during 2009-2010, then decreased during 2012-2013 after treatment recommendations were changed in 2010 to recommend dual therapy (with a cephalosporin and a second antibiotic) and a higher dosage of ceftriaxone. Subsequently, the treatment recommendations were changed again in 2012 to no longer recommend cefixime as part of first-line therapy (leaving ceftriaxone-based dual therapy as the only recommended therapy). Despite the MIC decrease (i.e., trend of improved cefixime susceptibility) during 2012-2013, the increase in the number of strains with Cfx-RS in 2014 underscores the potential threat of cephalosporin-resistant N. gonorrhoeae. PUBLIC HEALTH ACTION The National Strategy for Combating Antibiotic-Resistant Bacteria identifies prevention, rapid detection, and control of outbreaks of ceftriaxone-resistant N. gonorrhoeae infection as a priority for U.S. PUBLIC HEALTH ACTION Antimicrobial susceptibility surveillance is conducted to guide development of treatment recommendations for effective therapy and prevention of complications from and transmission of gonorrhea. Federal agencies can use GISP data to develop national treatment recommendations and set research and prevention priorities. Local and state health departments can use GISP data to determine allocation of STD prevention services and resources, guide prevention planning, and communicate best treatment practices to health care providers. Continued surveillance, appropriate treatment, development of new antibiotics, and prevention of transmission remain the best strategies to reduce gonorrhea incidence and morbidity.
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Affiliation(s)
- Robert D Kirkcaldy
- Division of STD Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD and TB Prevention, CDC, Atlanta, Georgia
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Shrestha R, Karki P, Copenhaver M. The Use of Female Sex Workers Among Men in Nepal: Prevalence, STIs/HIV-Related Risk Behaviors, and Gender Ideology. ACTA ACUST UNITED AC 2016; 6:11-17. [PMID: 27358577 PMCID: PMC4922505 DOI: 10.4137/ppri.s39664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Heterosexual sex involving female sex workers (FSWs) is widely documented for its role in facilitating the spread of sexually transmitted infections (STIs)/HIV. Critical to such studies, and increasingly considered essential to HIV prevention efforts, is the gender constructs and power dynamics within relationships. However, little efforts have been made, which focus on male clients of FSWs, particularly on the relationship between gender ideologies and men’s sexual contact with FSWs, within the Nepali context. The present study aims to fill this critical gap by assessing the prevalence of use of FSWs and its association with STIs/HIV-related risk behaviors and gender ideologies among Nepali men. We used data from the nationally representative Nepal Demographic Health Survey (NDHS) 2011. For the purpose of analyses, we included a sample of 4,121 men, aged 15–49 years. During data analyses, we used multivariate logistic regression models, adjusted for the following variables: age, region, residence, religion, educational level, wealth index, employment status, and cigarette smoking status. Of the total sample, approximately 5% reported the use of FSWs in their lifetime. In regression models, men who had sex with FSWs were more likely to report a history of STIs [adjusted odds ratio (aOR): 3.03; 95% confidence interval (CI): 1.69–5.43; P < 0.001], not using condom all the time (aOR: 1.31; 95% CI: 1.05–2.12; P = 0.010), more than one sexual partner (aOR: 3.75; 95% CI: 2.18–5.23; P < 0.001), and have had early sexual debut (aOR: 2.60; 95% CI: 1.85–3.67; P < 0.001). Respondents reporting the endorsement of violence against wives (aOR: 1.65; 95% CI: 1.01–2.84; P = 0.04) and male sexual entitlement (aOR: 1.63; 95% CI: 1.21–2.32; P = 0.001) were significantly more likely to report sexual contact with FSWs. Our findings highlight the need to develop and implement specifically tailored interventions toward male clients of FSWs, with a particular emphasis on promoting equitable gender roles and beliefs.
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Affiliation(s)
- Roman Shrestha
- Department of Community Medicine and Health Care, University of Connecticut Health Center, Farmington, CT, USA; Institute for Collaboration on Health, Intervention, and Policy, University of Connecticut, Storrs, CT, USA
| | - Pramila Karki
- Institute for Collaboration on Health, Intervention, and Policy, University of Connecticut, Storrs, CT, USA; Department of Allied Health Sciences, University of Connecticut, Storrs, CT, USA
| | - Michael Copenhaver
- Institute for Collaboration on Health, Intervention, and Policy, University of Connecticut, Storrs, CT, USA; Department of Allied Health Sciences, University of Connecticut, Storrs, CT, USA
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Black V, Williams BG, Maseko V, Radebe F, Rees HV, Lewis DA. Field evaluation of Standard Diagnostics' Bioline HIV/Syphilis Duo test among female sex workers in Johannesburg, South Africa. Sex Transm Infect 2016; 92:495-498. [PMID: 27154184 DOI: 10.1136/sextrans-2015-052474] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 04/10/2016] [Accepted: 04/16/2016] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Point-of-care tests provide immediate results with the opportunity for same-day interventions with improved public health outcomes. A dual HIV/syphilis test enables early treatment of both diseases. METHODS We conducted a field evaluation of the Standard Diagnostics' SD Bioline HIV/Syphilis Duo test (SD Bioline) among female sex workers. SD Bioline was conducted on finger-prick blood according to manufacturer's instructions and compared with (i) Genscreen HIV1/2 (third generation) and Vironostika Ag/Ab (fourth generation) assays for HIV, and (ii) Treponema pallidum particle agglutination (TPPA) and rapid plasma reagin (RPR) assays for syphilis. A negative TPPA test was considered negative, a TPPA-confirmed RPR titre ≤1:4 as past infection and a TPPA-confirmed RPR titre ≥1:8 as active syphilis. Sensitivity, specificity, positive and negative predictive values were calculated. RESULTS Of 263 women recruited, 14 (5.3%) declined an HIV test. Among the remaining 249 women, 187 (75.1%) were HIV positive, 51 (20.5%) had syphilis antibodies with seven (2.8%) active infections. For HIV, the sensitivity and specificity were 98.9% (95% CI 95.8% to 99.8%) and 100% (95% CI 92.7% to 100%). For syphilis, the sensitivity and specificity were 66.7% (95% CI 52.0% to 78.9%) and 98.0% (95% CI 94.5% to 99.3%). Sera with high TPPA titres were more likely to test positive. CONCLUSIONS In field conditions, while the SD Bioline test has high sensitivity and specificity for HIV and high specificity for syphilis, the test has lower sensitivity for syphilis than reported from laboratory evaluations. As the dual test detects only two thirds of syphilis cases, it should only be used in areas with weak screening programmes.
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Affiliation(s)
- Vivian Black
- Faculty of Health Sciences, Wits Reproductive Health and HIV Institute, University of the Witwatersrand, Johannesburg, South Africa.,Clinical Microbiology and Infectious Diseases, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Brian G Williams
- Faculty of Health Sciences, Wits Reproductive Health and HIV Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - Venessa Maseko
- Centre for HIV and STIs, National Institute for Communicable Diseases, Johannesburg, South Africa
| | - Frans Radebe
- Centre for HIV and STIs, National Institute for Communicable Diseases, Johannesburg, South Africa
| | - Helen V Rees
- Faculty of Health Sciences, Wits Reproductive Health and HIV Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - David A Lewis
- Centre for HIV and STIs, National Institute for Communicable Diseases, Johannesburg, South Africa.,Western Sydney Sexual Health Centre, Western Sydney Local Health District, Parramatta, Australia
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Cervicovaginal microbiome dysbiosis is associated with proteome changes related to alterations of the cervicovaginal mucosal barrier. Mucosal Immunol 2016; 9:621-33. [PMID: 26349657 DOI: 10.1038/mi.2015.86] [Citation(s) in RCA: 147] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 07/31/2015] [Indexed: 02/04/2023]
Abstract
Vaginal microbiome (VMB) dysbiosis is associated with increased acquisition of HIV. Cervicovaginal inflammation and other changes to the mucosal barrier are thought to have important roles but human data are scarce. We compared the human cervicovaginal proteome by mass spectrometry of 50 Rwandan female sex workers who had previously been clustered into four VMB groups using a 16S phylogenetic microarray; in order of increasing bacterial diversity: Lactobacillus crispatus-dominated VMB (group 1), Lactobacillus iners-dominated VMB (group 2), moderate dysbiosis (group 3), and severe dysbiosis (group 4). We compared relative protein abundances among these VMB groups using targeted (abundance of pre-defined mucosal barrier proteins) and untargeted (differentially abundant proteins among all human proteins identified) approaches. With increasing bacterial diversity, we found: mucus alterations (increasing mucin 5B and 5AC), cytoskeleton alterations (increasing actin-organizing proteins; decreasing keratins and cornified envelope proteins), increasing lactate dehydrogenase A/B as markers of cell death, increasing proteolytic activity (increasing proteasome core complex proteins/proteases; decreasing antiproteases), altered antimicrobial peptide balance (increasing psoriasin, calprotectin, and histones; decreasing lysozyme and ubiquitin), increasing pro-inflammatory cytokines, and decreasing immunoglobulins immunoglobulin G1/2. Although temporal relationships cannot be derived, our findings support the hypothesis that dysbiosis causes cervicovaginal inflammation and other detrimental changes to the mucosal barrier.
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Augusto ÂDR, Young PW, Horth RZ, Inguane C, Sathane I, Ngale K, Benedetti M, Cummings B, Botão CFS, Baltazar CAS, Frank H, Fagan J, Fisher Raymond H, McFarland W. High Burden of HIV Infection and Risk Behaviors Among Female Sex Workers in Three Main Urban Areas of Mozambique. AIDS Behav 2016; 20:799-810. [PMID: 26238035 DOI: 10.1007/s10461-015-1140-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This is the first integrated biological and behavioral survey among female sex workers (FSW) in Mozambique. Using respondent-driven sampling, 400, 411 and 429 FSW were enrolled respectively in Maputo, Beira and Nampula in 2011-2012. Estimates were produced using RDSAT 7.1. HIV prevalence was 31.2, 23.6, and 17.8 % in each location respectively. Among HIV-positive FSW, 48.1, 79.8 and 89.6 % in each city, were unaware of their serostatus. Condom use at last sex with a client was 85.8, 73.4 and 62.8 % among FSW, respectively. HIV was associated with current age, age of first sex for money, low educational level, and having had a genital ulcer in the last 6 months. Results suggest the urgent need to increase behavioral and structural interventions in this key population.
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Affiliation(s)
| | - Peter W Young
- Centers for Diseases Control and Prevention, Maputo, Mozambique
| | | | | | | | - Katia Ngale
- Pathfinder International, Maputo, Mozambique
| | | | | | | | | | - Heidi Frank
- Centers for Diseases Control and Prevention, Maputo, Mozambique
| | - Jennifer Fagan
- Centers for Diseases Control and Prevention, Atlanta, USA
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Borgdorff H, Armstrong SD, Tytgat HLP, Xia D, Ndayisaba GF, Wastling JM, van de Wijgert JHHM. Unique Insights in the Cervicovaginal Lactobacillus iners and L. crispatus Proteomes and Their Associations with Microbiota Dysbiosis. PLoS One 2016; 11:e0150767. [PMID: 26963809 PMCID: PMC4786256 DOI: 10.1371/journal.pone.0150767] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 02/17/2016] [Indexed: 02/02/2023] Open
Abstract
Background A Lactobacillus-dominated cervicovaginal microbiota (VMB) protects women from adverse reproductive health outcomes, but the role of L. iners in the VMB is poorly understood. Our aim was to explore the association between the cervicovaginal L. iners and L. crispatus proteomes and VMB composition. Methods The vaginal proteomes of 50 Rwandan women at high HIV risk, grouped into four VMB groups (based on 16S rDNA microarray results), were investigated by mass spectrometry using cervicovaginal lavage (CVL) samples. Only samples with positive 16S results for L. iners and/or L. crispatus within each group were included in subsequent comparative protein analyses: Lactobacillus crispatus-dominated VMB cluster (with 16S-proven L. iners (ni) = 0, and with 16S-proven L. crispatus (nc) = 5), L. iners-dominated VMB cluster (ni = 11, nc = 4), moderate dysbiosis (ni = 12, nc = 2); and severe dysbiosis (ni = 8, nc = 2). The relative abundances of proteins that were considered specific for L. iners and L. crispatus were compared among VMB groups. Results Forty Lactobacillus proteins were identified of which 7 were specific for L. iners and 11 for L. crispatus. The relative abundances of L. iners DNA starvation/stationary phase protection protein (DPS), and the glycolysis enzymes glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and glucose-6-phosphate isomerase (GPI), were significantly decreased in women with L. iners-containing dysbiosis compared to women with a L. iners-dominated VMB, independent of vaginal pH and L. iners abundance. Furthermore, L. iners DPS, GAPDH, GPI, and fructose-bisphosphate aldolase (ALDO) were significantly negatively associated with vaginal pH. Glycolysis enzymes of L. crispatus showed a similar negative, but nonsignificant, trend related to dysbiosis. Conclusions Most identified Lactobacillus proteins had conserved intracellular functions, but their high abundance in CVL supernatant might imply an additional extracellular (moonlighting) role. Our findings suggest that these proteins can be important in maintaining a Lactobacillus-dominated VMB. Functional studies are needed to investigate their roles in vaginal bacterial communities and whether they can be used to prevent vaginal dysbiosis.
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Affiliation(s)
- Hanneke Borgdorff
- Amsterdam Institute for Global Health and Development (AIGHD) and Department of Global Health, Academic Medical Center, Amsterdam, The Netherlands
| | - Stuart D. Armstrong
- Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
| | - Hanne L. P. Tytgat
- Laboratory of Microbiology, Wageningen University, Wageningen, The Netherlands
- Centre of Microbial and Plant Genetics, Catholic University Leuven, Leuven, Belgium
- Laboratory of Environmental Ecology and Applied Microbiology, University of Antwerp, Antwerp, Belgium
| | - Dong Xia
- Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
| | | | - Jonathan M. Wastling
- Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
- Faculty of Natural Sciences, Keele University, Keele, United Kingdom
| | - Janneke H. H. M. van de Wijgert
- Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
- Rinda Ubuzima, Kigali, Rwanda
- * E-mail:
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Jespers V, Nöstlinger C, van de Wijgert J. Adolescent sexual health: time to invest in a healthy future generation. Sex Transm Infect 2016; 92:248-9. [PMID: 26884550 DOI: 10.1136/sextrans-2015-052485] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 01/24/2016] [Indexed: 11/03/2022] Open
Affiliation(s)
- Vicky Jespers
- HIV and Sexual Health Group, Department of Public Health, Institute of Tropical Medicine, Antwerp, Belgium
| | - Christiana Nöstlinger
- HIV and Sexual Health Group, Department of Public Health, Institute of Tropical Medicine, Antwerp, Belgium
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Schwartz SR, Papworth E, Ky-Zerbo O, Sithole B, Anato S, Grosso A, Ouedraogo HG, Tchalla J, Ntshangase C, Ketende S, Baral S. Reproductive health needs of female sex workers and opportunities for enhanced prevention of mother-to-child transmission efforts in sub-Saharan Africa. ACTA ACUST UNITED AC 2015; 43:50-59. [PMID: 26609081 DOI: 10.1136/jfprhc-2014-100968] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Revised: 10/08/2015] [Accepted: 10/22/2015] [Indexed: 11/04/2022]
Abstract
INTRODUCTION HIV infection and pregnancy are both common among female sex workers (FSW), indicating the need for prevention of mother-to-child transmission (PMTCT) among FSW. METHODS FSW were enrolled into studies in Swaziland, Burkina Faso and Togo using respondent-driven sampling. Women completed interview-administered socio-behavioural surveys and HIV counselling and testing. This secondary analysis describes contraceptive use and attempted pregnancy among reproductive-aged FSW (16-49 years). Robust Poisson regression with generalised estimating equations to account for clustering within recruitment networks was used to separately estimate associations between current unmet contraceptive need and attempted pregnancy among FSW. RESULTS Overall 1666 FSW were enrolled, 1372 (82.4%) of whom had ever been pregnant. In Togo and Burkina Faso, 83 FSW reported a prior HIV diagnosis and having a child, of which 12.1% (10/83) reported a child known to be HIV-positive. Twenty-five per cent of FSW had an unmet need for contraception; 9% of FSW employed dual contraception, including highly effective non-barrier methods and consistent condom use. Consistent condom use varied substantially by partner type and was higher with clients than non-paying partners. Nineteen per cent (n=313/1666) of FSW were trying to conceive. HIV-positive, undiagnosed FSW were more likely to be trying to conceive as compared to HIV-negative FSW; among 98 HIV-positive women trying to conceive, 25.5% were on antiretroviral therapy. CONCLUSIONS FSW have varying reproductive goals and contraceptive usage. Efforts to improve coverage of comprehensive family planning - including efforts to increase HIV testing and engagement in treatment among FSW trying to conceive - are necessary for PMTCT.
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Affiliation(s)
- Sheree R Schwartz
- Assistant Scientist, Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Erin Papworth
- Senior Technical Advisor, Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Odette Ky-Zerbo
- Investigator, Programme d'Appui au Monde Associatif et Communautaire (PAMAC), Ouagadougou, Burkina Faso
| | | | | | - Ashley Grosso
- Senior Research Coordinator, Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Henri Gautier Ouedraogo
- Investigator, Institut de Recherche en Sciences de la Santé (IRSS/CNRST), Ouagadougou, Burkina Faso
| | - Jules Tchalla
- Monitoring and Evaluation Coordinator, Espoir de Vie, Lome, Togo
| | - Cebisile Ntshangase
- Investigator, Swaziland National AIDS Program (SNAP), Ministry of Health, Mbabane, Swaziland
| | - Sosthenes Ketende
- Senior Biostatistician, Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Stefan Baral
- Associate Professor and Director, Key Populations Program, Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
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Combination Antiretroviral Therapy for HIV in Rwandan Adults: Clinical Outcomes and Impact on Reproductive Health up to 24 Months. AIDS Res Treat 2015; 2015:740212. [PMID: 26257954 PMCID: PMC4519532 DOI: 10.1155/2015/740212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 06/28/2015] [Accepted: 06/29/2015] [Indexed: 11/17/2022] Open
Abstract
Adult women (n = 113) and men (n = 100) initiating combination antiretroviral therapy (cART) and women not yet eligible for cART (n = 199) in Kigali, Rwanda, were followed for 6–24 months between 2007 and 2010. In the cART groups, 21% of patients required a drug change due to side effects and 11% of patients had virological failure (defined as >1,000 HIV RNA copies/mL) after 12 months of cART. About a third of the pregnancies since HIV diagnosis were unintended. The proportion of women in the pre-cART group using modern contraception other than condoms (50%) was similar to women in the general population, but this proportion was only 25% in women initiating cART. Of the women who carried at least one pregnancy to term since having been diagnosed HIV-positive, a third reported to have participated in a prevention-of-mother-to-child-transmission (PMTCT, option A) intervention. Many patients were coinfected with herpes simplex virus type 2 (79–92%), human papillomavirus (38–53%), and bacterial sexually transmitted infections (STIs) with no differences between groups. We applaud the Rwandan government for having strengthened family planning and PMTCT services and for having introduced HPV vaccination in recent years, but additional work is needed to strengthen STI and HPV-related cancer screening and management in the HIV-positive population.
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Schwartz SR, Baral S. Fertility-related research needs among women at the margins. REPRODUCTIVE HEALTH MATTERS 2015; 23:30-46. [PMID: 26278831 DOI: 10.1016/j.rhm.2015.06.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 05/29/2015] [Accepted: 06/08/2015] [Indexed: 11/15/2022] Open
Abstract
Fertility-related research encompasses fertility intentions, preconception care, research amongst pregnant women, and post-partum outcomes of mothers and children. However, some women remain under-represented within this domain of study. Women frequently missing within fertility-related research include those who are already the most vulnerable to health disparities, including female sex workers, lesbian, gay, bisexual, and transgender women, women living with HIV, and women who use drugs. Yet characterization of the needs of these women is important, given their unique fertility-related concerns, including risks and barriers to care emanating from social stigmas and discrimination. This synthesis provides an overview of fertility-related evidence, highlighting where there are clear research gaps among marginalized women and the potential implications of these data shortfalls. Overall, research among marginalized women to date has addressed pregnancy prevention and in some cases fertility intentions, but the majority of studies have focused on post-conception pregnancy safety and the well-being of the child. However, among female sex workers specifically, data on pregnancy safety and the well-being of the child are largely unavailable. Within each marginalized group, preconception care and effectiveness of conception methods are consistently understudied. Ultimately, the absence of epidemiologic, clinical and programmatic evidence limits the availability and quality of reproductive health services for all women and prevents social action to address these gaps.
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Affiliation(s)
- Sheree R Schwartz
- Assistant Scientist, Center for Public Health and Human Rights, Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
| | - Stefan Baral
- Associate Professor, Center for Public Health and Human Rights, Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
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West African female sex workers in Mali: reduction in HIV prevalence and differences in risk profiles of sex workers of differing nationalities of origin. J Acquir Immune Defic Syndr 2015; 68 Suppl 2:S221-31. [PMID: 25723988 DOI: 10.1097/qai.0000000000000444] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Female sex workers (FSW) in Mali are highly vulnerable to HIV. Their prevalence in 2009 was 9 times higher (24.2%) than that among pregnant women (2.7%). METHODS Four Integrated HIV/sexually transmitted infection (STI) Surveillance and Behavioral Surveys among FSW in Mali (2000, 2003, 2006, and 2009) tracked demographic characteristics, behavior, and HIV and STI prevalence. Logistic regression using generalized estimating equations to control for the cluster effect identified factors associated with HIV-positive serostatus adjusting for potential confounding. RESULTS Of 2430 FSW, 40.8% were Nigerian, 36.8% were Malian, and 22.4% were from other neighboring countries. Between 2003 and 2009, HIV prevalence dropped from 44.14% to 28.49% (P < 0.0001) among Malians, from 21.33% to 12.71% (P = 0.0082) among Nigerians, and from 43.42% to 33.67% (P = 0.0442) among "others." Between 2000 and 2009, condom availability increased (89.18%-99.3%; P < 0.0001) as did HIV testing (40%-75%; P < 0.0001). Consistent condom use with clients improved for Malians (72.3%-81.5%; P = 0.0092), but not among Nigerians (92.7%-90.94%; P = 0.8240) and "others" (88.9%-88.48%; P = 0.8452). Consistent condom use with boyfriends was low and improved only for Nigerians (9.8%-28.4%; P = 0.0003). Factors associated with HIV prevalence in the multivariate model were older age, study year (2003 and 2006), nationality, lack of education, mobility, STI symptoms, gonorrhea prevalence, and younger age at first sex. CONCLUSIONS This study documents progress in the fight against HIV among FSW in Mali. The different vulnerabilities to HIV found for different nationality FSW should be considered in programming and future research.
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An urgent need for integration of family planning services into HIV care: the high burden of unplanned pregnancy, termination of pregnancy, and limited contraception use among female sex workers in Côte d'Ivoire. J Acquir Immune Defic Syndr 2015; 68 Suppl 2:S91-8. [PMID: 25723996 DOI: 10.1097/qai.0000000000000448] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND HIV infection and unintended pregnancy are occupational risks of commercial female sex work (FSW). The burden of unintended pregnancy among FSW including maternal and infant outcomes in the context of HIV is largely unknown. METHODS FSW ≥18 years were recruited through respondent driven sampling into a cross-sectional study in Abidjan, Côte d'Ivoire. Participants completed a sociobehavioral questionnaire and HIV counseling and testing. Pregnancy history by HIV status and contraceptive use were described, and Poisson regression used to estimate correlates of termination of pregnancy (TOP). RESULTS From March to July 2014, 466 FSW were enrolled. Unintended pregnancy was common, and 64% of participants had ≥1 TOP. Half of FSW experiencing TOPs did so without a medical professional, resulting in frequent complications. Contraceptive use was lowest among younger FSW, and 37% of 20-24 year olds reported multiple TOPs. FSW with a TOP history reported 19% less consistent condom use with clients than women who never had a TOP (adjusted-prevalence ratio, 0.81; 95% confidence interval: 0.74 to 0.88), whereas use of reliable nonbarrier contraceptive methods was comparable between the groups. Although FSW were engaged in HIV testing and prevention services, only 59% of FSW had received HIV testing before childbirth during their last pregnancy, and 30% of HIV-infected FSW had lost ≥1 children. CONCLUSIONS Low contraceptive use and high burden of unintended pregnancy result in poor reproductive outcomes for FSW and avoidable mother-to-child HIV transmission risks. Integration of family planning and antenatal services into HIV prevention and care programs accessed by FSW could enhance reproductive outcomes and HIV prevention goals.
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Jespers V, van de Wijgert J, Cools P, Verhelst R, Verstraelen H, Delany-Moretlwe S, Mwaura M, Ndayisaba GF, Mandaliya K, Menten J, Hardy L, Crucitti T. The significance of Lactobacillus crispatus and L. vaginalis for vaginal health and the negative effect of recent sex: a cross-sectional descriptive study across groups of African women. BMC Infect Dis 2015; 15:115. [PMID: 25879811 PMCID: PMC4351943 DOI: 10.1186/s12879-015-0825-z] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 02/10/2015] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Women in sub-Saharan Africa are vulnerable to acquiring HIV infection and reproductive tract infections. Bacterial vaginosis (BV), a disruption of the vaginal microbiota, has been shown to be strongly associated with HIV infection. Risk factors related to potentially protective or harmful microbiota species are not known. METHODS We present cross-sectional quantitative polymerase chain reaction data of the Lactobacillus genus, five Lactobacillus species, and three BV-related bacteria (Gardnerella vaginalis, Atopobium vaginae, and Prevotella bivia) together with Escherichia coli and Candida albicans in 426 African women across different groups at risk for HIV. We selected a reference group of adult HIV-negative women at average risk for HIV acquisition and compared species variations in subgroups of adolescents, HIV-negative pregnant women, women engaging in traditional vaginal practices, sex workers and a group of HIV-positive women on combination antiretroviral therapy. We explored the associations between presence and quantity of the bacteria with BV by Nugent score, in relation to several factors of known or theoretical importance. RESULTS The presence of species across Kenyan, South African and Rwandan women was remarkably similar and few differences were seen between the two groups of reference women in Kenya and South Africa. The Rwandan sex workers and HIV-positive women had the highest G. vaginalis presence (p = 0.006). Pregnant women had a higher Lactobacillus genus mean log (7.01 genome equivalents (geq)/ml) compared to the reference women (6.08 geq/ml). L. vaginalis (43%) was second to L. iners (81.9%) highly present in women with a normal Nugent score. Recent sexual exposure negatively affected the presence of L. crispatus (<0.001), L. vaginalis (p = 0.001), and Lactobacillus genus (p < 0.001). Having more than one sexual partner in the last three months was associated with an increased prevalence of G. vaginalis (p = 0.044) and L. iners (p = 0.001). CONCLUSIONS Although the composition of species across the studied African countries was similar, the presence of protective species i.e. L. crispatus and L. vaginalis in women with a normal Nugent score appeared lower compared to non-African studies. Furthermore, Lactobacillus species were negatively affected by sexual behavioural. Strategies to support protective Lactobacillus species are urgently needed. TRIAL REGISTRATION The study is registered at the Trial Registration at the National Health Research Ethics Council South Africa with the number DOH2709103223.
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Affiliation(s)
- Vicky Jespers
- Department of Public Health, Unit of Epidemiology and Control of HIV/STD, Institute of Tropical Medicine, Nationalestraat 155, B-2000, Antwerp, Belgium.
| | - Janneke van de Wijgert
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection and Global Health, University of Liverpool, Liverpool, UK.
| | - Piet Cools
- Laboratory Bacteriology Research, University Gent, Ghent, Belgium.
| | - Rita Verhelst
- International Center for Reproductive Health (ICRH), Ghent University, Ghent, Belgium.
| | - Hans Verstraelen
- Department of Obstetrics and Gynaecology, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium.
| | - Sinead Delany-Moretlwe
- Wits Reproductive Health & HIV Institute, University of Witwatersrand, Johannesburg, South Africa.
| | | | | | | | - Joris Menten
- Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.
| | - Liselotte Hardy
- Department of Public Health, Unit of Epidemiology and Control of HIV/STD, Institute of Tropical Medicine, Nationalestraat 155, B-2000, Antwerp, Belgium. .,Department of Clinical Sciences, HIV/STI Reference Laboratory, Institute of Tropical Medicine, Antwerp, Belgium.
| | - Tania Crucitti
- Department of Clinical Sciences, HIV/STI Reference Laboratory, Institute of Tropical Medicine, Antwerp, Belgium.
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The Impact of Hormonal Contraception and Pregnancy on Sexually Transmitted Infections and on Cervicovaginal Microbiota in African Sex Workers. Sex Transm Dis 2015; 42:143-52. [DOI: 10.1097/olq.0000000000000245] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Moore L, Chersich MF, Steen R, Reza-Paul S, Dhana A, Vuylsteke B, Lafort Y, Scorgie F. Community empowerment and involvement of female sex workers in targeted sexual and reproductive health interventions in Africa: a systematic review. Global Health 2014; 10:47. [PMID: 24916108 PMCID: PMC4074148 DOI: 10.1186/1744-8603-10-47] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 03/25/2014] [Indexed: 11/10/2022] Open
Abstract
Background Female sex workers (FSWs) experience high levels of sexual and reproductive health (SRH) morbidity, violence and discrimination. Successful SRH interventions for FSWs in India and elsewhere have long prioritised community mobilisation and structural interventions, yet little is known about similar approaches in African settings. We systematically reviewed community empowerment processes within FSW SRH projects in Africa, and assessed them using a framework developed by Ashodaya, an Indian sex worker organisation. Methods In November 2012 we searched Medline and Web of Science for studies of FSW health services in Africa, and consulted experts and websites of international organisations. Titles and abstracts were screened to identify studies describing relevant services, using a broad definition of empowerment. Data were extracted on service-delivery models and degree of FSW involvement, and analysed with reference to a four-stage framework developed by Ashodaya. This conceptualises community empowerment as progressing from (1) initial engagement with the sex worker community, to (2) community involvement in targeted activities, to (3) ownership, and finally, (4) sustainability of action beyond the community. Results Of 5413 articles screened, 129 were included, describing 42 projects. Targeted services in FSW ‘hotspots’ were generally isolated and limited in coverage and scope, mostly offering only free condoms and STI treatment. Many services were provided as part of research activities and offered via a clinic with associated community outreach. Empowerment processes were usually limited to peer-education (stage 2 of framework). Community mobilisation as an activity in its own right was rarely documented and while most projects successfully engaged communities, few progressed to involvement, community ownership or sustainability. Only a few interventions had evolved to facilitate collective action through formal democratic structures (stage 3). These reported improved sexual negotiating power and community solidarity, and positive behavioural and clinical outcomes. Sustainability of many projects was weakened by disunity within transient communities, variable commitment of programmers, low human resource capacity and general resource limitations. Conclusions Most FSW SRH projects in Africa implemented participatory processes consistent with only the earliest stages of community empowerment, although isolated projects demonstrate proof of concept for successful empowerment interventions in African settings.
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Affiliation(s)
- Lizzie Moore
- MatCH (Maternal, Adolescent and Child Health), Department of Obstetrics and Gynaecology, Faculty of Health Sciences, University of the Witwatersrand, Durban, South Africa.
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Hombre Seguro (Safe Men): a sexual risk reduction intervention for male clients of female sex workers. BMC Public Health 2014; 14:475. [PMID: 24885949 PMCID: PMC4045912 DOI: 10.1186/1471-2458-14-475] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 05/01/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Male clients of female sex workers (FSWs) are at risk of HIV and other sexually transmitted infections (STIs). We conducted a two-arm randomized controlled trial to test the efficacy of a sexual risk reduction intervention for male clients of FSWs in Tijuana, Mexico. METHODS/DESIGN Male clients of FSWs who were at least 18, were HIV-negative at baseline, and reported recent unprotected sex with FSWs were randomized to the Hombre Seguro sexual risk reduction intervention, or a time-attention didactic control condition. Each condition lasted approximately one hour. Participants underwent interviewer-administered surveys and testing for HIV and other STIs at baseline, and at 4, 8, and 12 month follow-ups. Combined HIV/STI incidence and unprotected vaginal and anal sex acts with FSWs were the primary outcomes. DISCUSSION A total of 400 participants were randomized to one of the two conditions. Analyses indicated that randomization was successful; there were no significant differences between the participants in the two conditions at baseline. Average follow-up was 84% across both conditions. This is the first study to test the efficacy of a sexual risk reduction intervention for male clients of FSWs using the rigor of a randomized controlled trial. TRIAL REGISTRATION NCT01280838, Date of registration: January 19, 2011.
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Nagelkerke NJD, Arora P, Jha P, Williams B, McKinnon L, de Vlas SJ. The rise and fall of HIV in high-prevalence countries: a challenge for mathematical modeling. PLoS Comput Biol 2014; 10:e1003459. [PMID: 24626088 PMCID: PMC3952813 DOI: 10.1371/journal.pcbi.1003459] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Several countries with generalized, high-prevalence HIV epidemics, mostly in sub-Saharan Africa, have experienced rapid declines in transmission. These HIV epidemics, often with rapid onsets, have generally been attributed to a combination of factors related to high-risk sexual behavior. The subsequent declines in these countries began prior to widespread therapy or implementation of any other major biomedical prevention. This change has been construed as evidence of behavior change, often on the basis of mathematical models, but direct evidence for behavior changes that would explain these declines is limited. Here, we look at the structure of current models and argue that the common “fixed risk per sexual contact" assumption favors the conclusion of substantial behavior changes. We argue that this assumption ignores reported non-linearities between exposure and risk. Taking this into account, we propose that some of the decline in HIV transmission may be part of the natural dynamics of the epidemic, and that several factors that have traditionally been ignored by modelers for lack of precise quantitative estimates may well hold the key to understanding epidemiologic trends.
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Affiliation(s)
- Nico J. D. Nagelkerke
- Institute of Public Health, College of Medicine and Health Science, United Arab Emirates University, Al Ain, United Arab Emirates
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, Canada
| | - Paul Arora
- Center for Global Health Research, St. Michael's Hospital, Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - Prabhat Jha
- Center for Global Health Research, St. Michael's Hospital, Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - Brian Williams
- South African Centre for Epidemiological Modelling and Analysis, University of Stellenbosch, Stellenbosch, South Africa
| | - Lyle McKinnon
- Department of Medicine, University of Toronto, Toronto, Canada
- Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya
| | - Sake J. de Vlas
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
- * E-mail:
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Borgdorff H, Tsivtsivadze E, Verhelst R, Marzorati M, Jurriaans S, Ndayisaba GF, Schuren FH, van de Wijgert JHHM. Lactobacillus-dominated cervicovaginal microbiota associated with reduced HIV/STI prevalence and genital HIV viral load in African women. ISME JOURNAL 2014; 8:1781-93. [PMID: 24599071 DOI: 10.1038/ismej.2014.26] [Citation(s) in RCA: 189] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 12/04/2013] [Accepted: 01/20/2014] [Indexed: 01/28/2023]
Abstract
Cervicovaginal microbiota not dominated by lactobacilli may facilitate transmission of HIV and other sexually transmitted infections (STIs), as well as miscarriages, preterm births and sepsis in pregnant women. However, little is known about the exact nature of the microbiological changes that cause these adverse outcomes. In this study, cervical samples of 174 Rwandan female sex workers were analyzed cross-sectionally using a phylogenetic microarray. Furthermore, HIV-1 RNA concentrations were measured in cervicovaginal lavages of 58 HIV-positive women among them. We identified six microbiome clusters, representing a gradient from low semi-quantitative abundance and diversity dominated by Lactobacillus crispatus (cluster R-I, with R denoting 'Rwanda') and L. iners (R-II) to intermediate (R-V) and high abundance and diversity (R-III, R-IV and R-VI) dominated by a mixture of anaerobes, including Gardnerella, Atopobium and Prevotella species. Women in cluster R-I were less likely to have HIV (P=0.03), herpes simplex virus type 2 (HSV-2; P<0.01), and high-risk human papillomavirus (HPV; P<0.01) and had no bacterial STIs (P=0.15). Statistically significant trends in prevalence of viral STIs were found from low prevalence in cluster R-I, to higher prevalence in clusters R-II and R-V, and highest prevalence in clusters R-III/R-IV/R-VI. Furthermore, only 10% of HIV-positive women in clusters R-I/R-II, compared with 40% in cluster R-V, and 42% in clusters R-III/R-IV/R-VI had detectable cervicovaginal HIV-1 RNA (Ptrend=0.03). We conclude that L. crispatus-dominated, and to a lesser extent L. iners-dominated, cervicovaginal microbiota are associated with a lower prevalence of HIV/STIs and a lower likelihood of genital HIV-1 RNA shedding.
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Affiliation(s)
- Hanneke Borgdorff
- Amsterdam Institute for Global Health and Development (AIGHD) and Department of Global Health, Academic Medical Center, Amsterdam, The Netherlands
| | | | - Rita Verhelst
- International Center for Reproductive Health (ICRH), Ghent University, Ghent, Belgium
| | - Massimo Marzorati
- Laboratory of Microbial Ecology and Technology (LabMET), Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Suzanne Jurriaans
- Laboratory of Clinical Virology, Department of Medical Microbiology, Academic Medical Center, Amsterdam, The Netherlands
| | | | - Frank H Schuren
- TNO Microbiology and Systems Biology, Zeist, The Netherlands
| | - Janneke H H M van de Wijgert
- 1] Amsterdam Institute for Global Health and Development (AIGHD) and Department of Global Health, Academic Medical Center, Amsterdam, The Netherlands [2] Department of Clinical Infection, Microbiology and Immunology, Institute of Infection and Global Health, University of Liverpool, Liverpool, UK
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Drake AL, Wagner A, Richardson B, John-Stewart G. Incident HIV during pregnancy and postpartum and risk of mother-to-child HIV transmission: a systematic review and meta-analysis. PLoS Med 2014; 11:e1001608. [PMID: 24586123 PMCID: PMC3934828 DOI: 10.1371/journal.pmed.1001608] [Citation(s) in RCA: 279] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 01/14/2014] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Women may have persistent risk of HIV acquisition during pregnancy and postpartum. Estimating risk of HIV during these periods is important to inform optimal prevention approaches. We performed a systematic review and meta-analysis to estimate maternal HIV incidence during pregnancy/postpartum and to compare mother-to-child HIV transmission (MTCT) risk among women with incident versus chronic infection. METHODS AND FINDINGS We searched PubMed, Embase, and AIDS-related conference abstracts between January 1, 1980, and October 31, 2013, for articles and abstracts describing HIV acquisition during pregnancy/postpartum. The inclusion criterion was studies with data on recent HIV during pregnancy/postpartum. Random effects models were constructed to pool HIV incidence rates, cumulative HIV incidence, hazard ratios (HRs), or odds ratios (ORs) summarizing the association between pregnancy/postpartum status and HIV incidence, and MTCT risk and rates. Overall, 1,176 studies met the search criteria, of which 78 met the inclusion criterion, and 47 contributed data. Using data from 19 cohorts representing 22,803 total person-years, the pooled HIV incidence rate during pregnancy/postpartum was 3.8/100 person-years (95% CI 3.0-4.6): 4.7/100 person-years during pregnancy and 2.9/100 person-years postpartum (p = 0.18). Pooled cumulative HIV incidence was significantly higher in African than non-African countries (3.6% versus 0.3%, respectively; p<0.001). Risk of HIV was not significantly higher among pregnant (HR 1.3, 95% CI 0.5-2.1) or postpartum women (HR 1.1, 95% CI 0.6-1.6) than among non-pregnant/non-postpartum women in five studies with available data. In African cohorts, MTCT risk was significantly higher among women with incident versus chronic HIV infection in the postpartum period (OR 2.9, 95% CI 2.2-3.9) or in pregnancy/postpartum periods combined (OR 2.3, 95% CI 1.2-4.4). However, the small number of studies limited power to detect associations and sources of heterogeneity. CONCLUSIONS Pregnancy and the postpartum period are times of persistent HIV risk, at rates similar to "high risk" cohorts. MTCT risk was elevated among women with incident infections. Detection and prevention of incident HIV in pregnancy/postpartum should be prioritized, and is critical to decrease MTCT.
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Affiliation(s)
- Alison L. Drake
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
| | - Anjuli Wagner
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - Barbra Richardson
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Biostatistics, 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
| | - Grace John-Stewart
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
- Department of Pediatrics, University of Washington, Seattle, Washington, United States of America
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Chemaitelly H, Awad SF, Abu-Raddad LJ. The risk of HIV transmission within HIV-1 sero-discordant couples appears to vary across sub-Saharan Africa. Epidemics 2013; 6:1-9. [PMID: 24593916 DOI: 10.1016/j.epidem.2013.11.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Revised: 09/22/2013] [Accepted: 11/11/2013] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Representative and precise estimates for the annual risk of HIV transmission (ϕ) from the infected to the uninfected partner in a stable HIV-1 sero-discordant couple (SDC) are not available. Nevertheless, quantifying HIV infectiousness is critical to understanding HIV epidemiology and implementing prevention programs. MATERIALS AND METHODS We estimated ϕ and examined its variation across 23 countries in sub-Saharan Africa (SSA) by constructing and analyzing a mathematical model that describes HIV dynamics among SDCs. The model was parameterized using empirical measures such as those of the nationally representative Demographic and Health Surveys. Uncertainty and sensitivity analyses were conducted to assess the robustness of the findings. RESULTS We estimated a median ϕ of 11.1 per 100 person-years across SSA. A clustering based on HIV population prevalence was observed with a median ϕ of 7.5 per 100 person-years in low HIV prevalence countries (<5%) compared to 19.5 per 100 person-years in high prevalence countries (>5%). The association with HIV prevalence explained 67% of the variation in ϕ, and suggested an increase of 0.95 per 100 person-years in ϕ for every 1% increase in HIV prevalence. CONCLUSIONS Empirical measures from cohort studies appear to underestimate HIV infectiousness in SSA. The risk of HIV transmission among SDCs appears also to vary across SSA, and this may have contributed to the contrasting HIV epidemic trajectories in this continent.
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Affiliation(s)
- Hiam Chemaitelly
- Infectious Disease Epidemiology Group, Weill Cornell Medical College - Qatar, Cornell University, Qatar Foundation - Education City, Doha, Qatar
| | - Susanne F Awad
- Infectious Disease Epidemiology Group, Weill Cornell Medical College - Qatar, Cornell University, Qatar Foundation - Education City, Doha, Qatar
| | - Laith J Abu-Raddad
- Infectious Disease Epidemiology Group, Weill Cornell Medical College - Qatar, Cornell University, Qatar Foundation - Education City, Doha, Qatar; Department of Public Health, Weill Cornell Medical College, Cornell University, New York, NY, USA; Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.
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