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Kabengele C, Mwangelwa S, Kilembe W, Vwalika B, Inambao M, Moonga V, Himukumbwa C, Secor WE, Parker R, Tichacek A, Bustinduy AL, Allen S, Wall KM. Female Genital Schistosomiasis Lesion Resolution Post-Treatment with Praziquantel in Zambian Adults. Am J Trop Med Hyg 2024; 110:250-253. [PMID: 38190749 PMCID: PMC10859808 DOI: 10.4269/ajtmh.23-0552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 10/03/2023] [Indexed: 01/10/2024] Open
Abstract
We evaluated changes in female genital schistosomiasis (FGS) 6 to 12 months after praziquantel treatment among 43 adult Zambian women. Most women (60%) experienced decreased FGS severity and 23% experienced complete lesion resolution. This is the first study to demonstrate a meaningful effect of praziquantel treatment of FGS in adult women.
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Affiliation(s)
| | | | | | | | | | - Vernon Moonga
- Center for Family Health Research Zambia, Lusaka, Zambia
| | | | - W. Evan Secor
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Rachel Parker
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, Georgia
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, Georgia
| | - Amaya L. Bustinduy
- Department of Clinical Research, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Susan Allen
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, Georgia
| | - Kristin M. Wall
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, Georgia
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Sharkey T, Parker R, Wall KM, Malama K, Pappas-DeLuca K, Tichacek A, Peeling R, Kilembe W, Inambao M, Allen S. Use of "Strengthening Our Vows" Video Intervention to Encourage Negotiated Explicit Sexual Agreements in Zambian Heterosexual HIV Seroconcordant-Negative Couples. Arch Sex Behav 2023; 52:2649-2667. [PMID: 37024634 PMCID: PMC10524092 DOI: 10.1007/s10508-023-02590-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 02/09/2023] [Accepted: 03/14/2023] [Indexed: 06/19/2023]
Abstract
Negotiating sexual agreements in combination with couples' voluntary HIV counseling and testing (CVCT) may help further reduce HIV transmission in Zambian concordant HIV-negative couples (CNC). Though CVCT has been shown to reduce HIV transmission in CNC by 47%, approximately half of residual infections occur in this group. We developed a "Strengthening Our Vows" video session to foster communication and negotiation of explicit sexual agreements to reduce concurrent sexual exposures and prevent HIV transmission to the spouse due to unprotected, extramarital sex. CNC were recruited through CVCT services at five clinics in Lusaka and Ndola in 2016. Enrolled CNC attending the facilitated group video sessions were encouraged to discuss sexual agreements at home and return 1-2 weeks later for follow-up assessment. One-fourth of the 580 CNC returning reported a history of extramarital partners and/or a sexually transmitted infection (STI) prior to enrollment. More than 95% reported a friendly, supportive 15-60 min negotiation culminating in an agreement to remain monogamous or disclose sexual contacts and use condoms together until a repeat HIV test 30 days after an outside sexual exposure. Two-thirds of participants identified at least one threat to adherence of their agreements including alcohol use, financial pressures, travel, discord in the home, and post-partum or menstrual abstinence. CNC negotiated explicit sexual agreements to avoid exposure to HIV through concurrent partnerships and protect the spouse in the event of an outside sexual contact. Open communication was a consistent theme to facilitate mutual protective efforts. Long-term follow-up of HIV/STI incidence is ongoing to assess the impact of these agreements.Trial registration This sub-study is part of a trial retrospectively registered on ClinicalTrials.gov (Identifier: NCT02744586) on April 20, 2016.
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Affiliation(s)
- Tyronza Sharkey
- Rwanda Zambia Health Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA.
- Department of Clinical Research, Faculty of Infectious and Tropical Disease, London School of Hygiene and Tropical Medicine, London, UK.
| | - Rachel Parker
- Rwanda Zambia Health Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
| | - Kristin M Wall
- Rwanda Zambia Health Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
- Department of Epidemiology, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, USA
| | - Kalonde Malama
- Rwanda Zambia Health Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
| | - Katina Pappas-DeLuca
- Rwanda Zambia Health Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
| | - Amanda Tichacek
- Rwanda Zambia Health Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
| | - Rosanna Peeling
- Department of Clinical Research, Faculty of Infectious and Tropical Disease, London School of Hygiene and Tropical Medicine, London, UK
| | - William Kilembe
- Rwanda Zambia Health Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
| | - Mubiana Inambao
- Rwanda Zambia Health Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
| | - Susan Allen
- Rwanda Zambia Health Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
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Malama K, Tichacek A, Kelly H, Parker R, Inambao M, Sharkey T, Wall KM, Kilembe W, Price MA, Fast P, Priddy F, Allen S. Measles immunity gap among reproductive-age women participating in a simulated HIV vaccine efficacy trial in Zambia. Hum Vaccin Immunother 2022; 18:2066426. [PMID: 35446726 PMCID: PMC9302517 DOI: 10.1080/21645515.2022.2066426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Measles is a vaccine-preventable viral disease whose vaccination coverage remains low in Zambia, where the target group for vaccination is children aged 9 to 18 months. In addition to inadequate measles vaccination coverage among children, few studies address potential resultant immunity gaps among adults. We analyzed data from a simulated HIV vaccine efficacy trial (SiVET) conducted from 2015–2017 among adult Zambian women of childbearing age to determine measles antibody seroprevalence before and after vaccination with the measles, mumps and rubella (MMR) vaccine. We used MMR vaccine as a substitute for an experimental HIV vaccine as part of a simulation exercise to prepare for an HIV vaccine efficacy trial. We found that 75% of women had measles antibodies prior to receiving MMR, which increased to 98% after vaccination. In contrast, mumps and rubella antibody prevalence was high before (93% and 97%, respectively) and after (99% and 100%, respectively) vaccination. The low baseline measles seropositivity suggests an immunity gap among women of childbearing age. We recommend that measles vaccination programs target women of childbearing age, who can pass antibodies on to neonates. Moreover, administering the MMR vaccine to clinical trial candidates could prevent measles, mumps or rubella-related adverse events during actual trials.
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Affiliation(s)
- Kalonde Malama
- Center for Family Health Research in Zambia, Rwanda Zambia HIV Research Group, Lusaka, Zambia
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Emory University, School of Medicine, Atlanta, GA, USA
| | - Hilary Kelly
- Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Rachel Parker
- Rwanda Zambia HIV Research Group, Emory University, School of Medicine, Atlanta, GA, USA
| | - Mubiana Inambao
- Center for Family Health Research in Zambia, Rwanda Zambia HIV Research Group, Ndola, Zambia
| | - Tyronza Sharkey
- Center for Family Health Research in Zambia, Rwanda Zambia HIV Research Group, Lusaka, Zambia
| | - Kristin M Wall
- Rwanda Zambia HIV Research Group, Emory University, School of Medicine, Atlanta, GA, USA.,Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - William Kilembe
- Center for Family Health Research in Zambia, Rwanda Zambia HIV Research Group, Lusaka, Zambia
| | - Matt A Price
- IAVI, New York, NY, USA.,Department of Epidemiology and Biostatistics, University of California at San Francisco, San Francisco, CA, USA
| | | | | | - Susan Allen
- Rwanda Zambia HIV Research Group, Emory University, School of Medicine, Atlanta, GA, USA
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Sharkey T, Wall KM, Parker R, Tichacek A, Pappas-DeLuca KA, Kilembe W, Inambao M, Malama K, Hoagland A, Peeling R, Allen S. A cluster randomized trial to reduce HIV risk from outside partnerships in Zambian HIV-Negative couples using a novel behavioral intervention, "Strengthening Our Vows": Study protocol and baseline data. Contemp Clin Trials Commun 2021; 24:100850. [PMID: 34622087 PMCID: PMC8481973 DOI: 10.1016/j.conctc.2021.100850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 08/02/2021] [Accepted: 09/08/2021] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Heterosexual couples contribute to most new HIV infections in areas of generalized HIV epidemics in sub-Saharan Africa. After Couples' Voluntary HIV Counseling and Testing (CVCT), heterosexual concordant HIV negative couples (CNC) in cohabiting unions contribute to approximately 47% of residual new infections in couples. These infections are attributed to concurrent sexual partners, a key driver of the HIV epidemic in Zambia. METHODS/DESIGN Ten Zambian government clinics in two of the largest cities were randomized in matched pairs to a Strengthening Our Vows (SOV) intervention or a Good Health Package (GHP) comparison arm. SOV addressed preventing HIV infection from concurrent partners and protecting spouses after exposures outside the relationship. GHP focused on handwashing; water chlorination; household deworming; and screening for hypertension, diabetes and schistosomiasis. CNC were referred from CVCT services in government clinics. Follow-up includes post-intervention questionnaires and outcome assessments through 60 months. Longitudinal outcomes of interest include self-report and laboratory markers of condomless sex with outside partners and reported sexual agreements. We present baseline characteristics and factors associated with study arm and reported risk using descriptive statistics. RESULTS The mean age of men was 32 and 26 for women. On average, couples cohabited for 6 years and had 2 children. Baseline analyses demonstrated some failures of randomization by study arm which will be considered in future primary analyses of longitudinal data. An HIV/STI risk factor composite was not different in the two study arms. Almost one-quarter of couples had an HIV risk factor at baseline. DISCUSSION In preparation for future biomedical and behavioral interventions in sub-Saharan Africa, it is critical to understand and decrease HIV risk within CNC.
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Affiliation(s)
- Tyronza Sharkey
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
- London School of Hygiene and Tropical Medicine, UK
| | - Kristin M. Wall
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
- Department of Epidemiology, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
| | - Rachel Parker
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
| | - Katina A. Pappas-DeLuca
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
| | - William Kilembe
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
| | - Mubiana Inambao
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
| | - Kalonde Malama
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
| | - Alexandra Hoagland
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
| | | | - Susan Allen
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, 30322, USA
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Malama K, Sagaon Teyssier L, Parker R, Tichacek A, Sharkey T, Kilembe W, Inambao M, Price MA, Spire B, Allen S. Client-Initiated Violence Against Zambian Female Sex Workers: Prevalence and Associations With Behavior, Environment, and Sexual History. J Interpers Violence 2021; 36:NP9483-NP9500. [PMID: 31268388 PMCID: PMC8366593 DOI: 10.1177/0886260519860083] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Violence against women is a known risk factor for HIV and affects female sex workers (FSW) in sub-Saharan Africa. Little is known about the magnitude and determinants of violence against FSW in Zambia, where HIV and gender-based violence prevalence are high. We conducted a cross-sectional study, using multivariable logistic regression, to determine the prevalence and correlates of client-initiated physical violence among 419 FSW in Lusaka and Ndola. The prevalence of client-initiated physical violence was 39%. The odds of violence were higher for FSW who: lived in Lusaka, recruited clients from the street, serviced clients in the clients' homes, had a physically forced sexual debut, and had a higher client volume. Our results call for safer working spaces for FSW and violence prevention interventions for their male clients.
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Affiliation(s)
- Kalonde Malama
- Aix-Marseille Université, APHM, INSERM, IRD, Sciences Économiques & Sociales de la Santé et Traitement de l’Information Médicale (SESSTIM), Marseille, France
- Observatoire Régional de la Santé Provence-Alpes-Côte d’Azur (ORS PACA), Marseille, France
| | - Luis Sagaon Teyssier
- Aix-Marseille Université, APHM, INSERM, IRD, Sciences Économiques & Sociales de la Santé et Traitement de l’Information Médicale (SESSTIM), Marseille, France
- Observatoire Régional de la Santé Provence-Alpes-Côte d’Azur (ORS PACA), Marseille, France
| | - Rachel Parker
- Rwanda Zambia HIV Research Group, Emory University, Pathology & Laboratory Medicine, School of Medicine, Atlanta, GA, United States
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Emory University, Pathology & Laboratory Medicine, School of Medicine, Atlanta, GA, United States
| | - Tyronza Sharkey
- Zambia Emory HIV Research Project, Rwanda Zambia HIV Research Group, Emory University, Lusaka, Zambia
| | - William Kilembe
- Zambia Emory HIV Research Project, Rwanda Zambia HIV Research Group, Emory University, Lusaka, Zambia
| | - Mubiana Inambao
- Zambia Emory HIV Research Project, Rwanda Zambia HIV Research Group, Emory University, Ndola, Zambia
| | - Matt A Price
- International AIDS Vaccine Initiative (IAVI) New York, New York, United States of America
- Department of Epidemiology and Biostatistics, University of California at San Francisco, San Francisco, California, United States of America
| | - Bruno Spire
- Aix-Marseille Université, APHM, INSERM, IRD, Sciences Économiques & Sociales de la Santé et Traitement de l’Information Médicale (SESSTIM), Marseille, France
- Observatoire Régional de la Santé Provence-Alpes-Côte d’Azur (ORS PACA), Marseille, France
| | - Susan Allen
- Rwanda Zambia HIV Research Group, Emory University, Pathology & Laboratory Medicine, School of Medicine, Atlanta, GA, United States
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Price MA, Kilembe W, Ruzagira E, Karita E, Inambao M, Sanders EJ, Anzala O, Allen S, Edward VA, Kaleebu P, Fast PE, Rida W, Kamali A, Hunter E, Tang J, Lakhi S, Mutua G, Bekker LG, Abu-Baker G, Tichacek A, Chetty P, Latka MH, Maenetje P, Makkan H, Hare J, Kibengo F, Priddy F, Landais E, Chinyenze K, Gilmour J. Cohort Profile: IAVI's HIV epidemiology and early infection cohort studies in Africa to support vaccine discovery. Int J Epidemiol 2021; 50:29-30. [PMID: 32879950 PMCID: PMC7938500 DOI: 10.1093/ije/dyaa100] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2020] [Indexed: 12/20/2022] Open
Affiliation(s)
- Matt A Price
- IAVI, New York, USA & Nairobi, Kenya
- Department of Epidemiology and Biostatistics, University of California at San Francisco, San Francisco, CA, USA
| | - William Kilembe
- Rwanda Zambia Emory HIV Research Group, Lusaka & Ndola, Zambia; Kigali, Rwanda
- Emory University, Atlanta, GA, USA
| | - Eugene Ruzagira
- Medical Research Council, Uganda Virus Research Institute, and London School of Hygiene and Tropical Medicine Uganda Research Unit (MULS), Entebbe & Masaka, Uganda
| | - Etienne Karita
- Rwanda Zambia Emory HIV Research Group, Lusaka & Ndola, Zambia; Kigali, Rwanda
- Emory University, Atlanta, GA, USA
| | - Mubiana Inambao
- Rwanda Zambia Emory HIV Research Group, Lusaka & Ndola, Zambia; Kigali, Rwanda
- Emory University, Atlanta, GA, USA
| | - Eduard J Sanders
- Kenyan Medical Research Institute-Wellcome Trust, Kilifi, Kenya
- Nuffield Department of Clinical Medicine, Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Headington, UK
| | - Omu Anzala
- KAVI-Institute of Clinical Research, Nairobi, Kenya
| | - Susan Allen
- Rwanda Zambia Emory HIV Research Group, Lusaka & Ndola, Zambia; Kigali, Rwanda
- Emory University, Atlanta, GA, USA
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA, USA
| | - Vinodh A Edward
- The Aurum Institute, Johannesburg and Rustenburg, South Africa
- School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Advancing Care and Treatment for TB/HIV, A Collaborating Centre of the South African Medical Research Council, Cape Town, South Africa
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA
| | - Pontiano Kaleebu
- Medical Research Council, Uganda Virus Research Institute, and London School of Hygiene and Tropical Medicine Uganda Research Unit (MULS), Entebbe & Masaka, Uganda
| | - Patricia E Fast
- IAVI, New York, USA & Nairobi, Kenya
- Pediatric Infectious Diseases, School of Medicine, Stanford University, Palo Alto, CA, USA
| | - Wasima Rida
- Biostatistics Consultant, Arlington, VA, USA
| | | | - Eric Hunter
- Rwanda Zambia Emory HIV Research Group, Lusaka & Ndola, Zambia; Kigali, Rwanda
- Emory University, Atlanta, GA, USA
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA, USA
| | - Jianming Tang
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Shabir Lakhi
- Rwanda Zambia Emory HIV Research Group, Lusaka & Ndola, Zambia; Kigali, Rwanda
- Emory University, Atlanta, GA, USA
| | | | - Linda Gail Bekker
- Desmond Tutu HIV Centre, University of Cape Town, Cape Town, South Africa
| | - Ggayi Abu-Baker
- Medical Research Council, Uganda Virus Research Institute, and London School of Hygiene and Tropical Medicine Uganda Research Unit (MULS), Entebbe & Masaka, Uganda
| | - Amanda Tichacek
- Rwanda Zambia Emory HIV Research Group, Lusaka & Ndola, Zambia; Kigali, Rwanda
- Emory University, Atlanta, GA, USA
- Department of Epidemiology, Emory University, Atlanta, GA, USA
| | | | - Mary H Latka
- The Aurum Institute, Johannesburg and Rustenburg, South Africa
| | - Pholo Maenetje
- The Aurum Institute, Johannesburg and Rustenburg, South Africa
| | - Heeran Makkan
- The Aurum Institute, Johannesburg and Rustenburg, South Africa
| | - Jonathan Hare
- IAVI Human Immunology Laboratory, Imperial College, London, UK
| | - Freddie Kibengo
- Medical Research Council, Uganda Virus Research Institute, and London School of Hygiene and Tropical Medicine Uganda Research Unit (MULS), Entebbe & Masaka, Uganda
| | | | - Elise Landais
- IAVI, New York, USA & Nairobi, Kenya
- IAVI Neutralizing Antibody Center, The Scripps Research Institute, La Jolla, CA, USA
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, USA
| | | | - Jill Gilmour
- IAVI Human Immunology Laboratory, Imperial College, London, UK
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7
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Malama K, Sagaon-Teyssier L, Gosset A, Parker R, Wall KM, Tichacek A, Sharkey T, Kilembe W, Inambao M, Price MA, Spire B, Allen S. Loss to follow-up among female sex workers in Zambia: findings from a five-year HIV-incidence cohort. Afr J AIDS Res 2021; 19:296-303. [PMID: 33337978 DOI: 10.2989/16085906.2020.1836005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
HIV-incidence studies are used to identify at-risk populations for HIV-prevention trials and interventions, but loss to follow-up (LTFU) can bias results if participants who remain differ from those who drop out. We investigated the incidence of and factors associated with LTFU among Zambian female sex workers (FSWs) in an HIV-incidence cohort from 2012 to 2017. Enrolled participants returned at month one, month three and quarterly thereafter. FSWs were considered LTFU if they missed six consecutive months, or if their last visit was six months before the study end date. Of 420 FSWs, 139 (33%) were LTFU at a rate of 15.7 per 100 person years. In multivariable analysis, LTFU was greater for FSWs who never used alcohol, began sex work above the age of consent, and had a lower volume of new clients. Our study appeared to retain FSWs in most need of HIV-prevention services offered at follow-up.
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Affiliation(s)
- Kalonde Malama
- Aix Marseille Univ, INSERM, IRD, SESSTIM, Marseille, France.,ORS PACA, Marseille, France
| | - Luis Sagaon-Teyssier
- Aix Marseille Univ, INSERM, IRD, SESSTIM, Marseille, France.,ORS PACA, Marseille, France
| | - Andréa Gosset
- Aix Marseille Univ, INSERM, IRD, SESSTIM, Marseille, France
| | - Rachel Parker
- Rwanda Zambia HIV Research Group, Emory University, School of Medicine, Atlanta, USA
| | - Kristin M Wall
- Rwanda Zambia HIV Research Group, Emory University, School of Medicine, Atlanta, USA.,Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, USA
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Emory University, School of Medicine, Atlanta, USA
| | - Tyronza Sharkey
- Zambia Emory HIV Research Project, Rwanda Zambia HIV Research Group, Emory University, Lusaka, Zambia
| | - William Kilembe
- Zambia Emory HIV Research Project, Rwanda Zambia HIV Research Group, Emory University, Lusaka, Zambia
| | - Mubiana Inambao
- Zambia Emory HIV Research Project, Rwanda Zambia HIV Research Group, Emory University, Ndola, Zambia
| | - Matt A Price
- IAVI, New York, USA.,Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, USA
| | - Bruno Spire
- Aix Marseille Univ, INSERM, IRD, SESSTIM, Marseille, France.,ORS PACA, Marseille, France
| | - Susan Allen
- Rwanda Zambia HIV Research Group, Emory University, School of Medicine, Atlanta, USA
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Connolly S, Wall KM, Parker R, Kilembe W, Inambao M, Visoiu AM, Sharkey T, Hunter E, Allen S. Sociodemographic factors and STIs associated with Chlamydia trachomatis and Neisseria gonorrhoeae infections in Zambian female sex workers and single mothers. Int J STD AIDS 2020; 31:364-374. [PMID: 32126947 DOI: 10.1177/0956462419894453] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Sexually transmitted infections (STIs) in women caused by Chlamydia trachomatis (CT) and/or Neisseria gonorrhoeae (NG) are epidemiologically distinct. In this study, associations with sociodemographic and clinical risk factors are explored separately for CT and NG. Multivariate logistic regression (MLR) models quantify associations between potential CT and/or NG risk factors within a cross-sectional study of high-risk women in two Zambian cities, Lusaka and Ndola. CT was associated with living in Lusaka, younger age, and literacy. Long-acting reversible contraception (LARC) was predictive of CT in Ndola, but protective in Lusaka. In Lusaka only, CT was associated with lower education and reported unprotected sex. NG was associated with younger age, lower education, concurrent Trichomonas vaginalis, bacterial vaginosis, and incident syphilis infection. Signs and symptoms were rare and not associated with either infection. CT was more prevalent, nearly 11%, compared to NG, 6.8%. The higher prevalence of CT could explain the lack of association with other STIs. The associations observed with NG could be the result of high-risk sexual networks or lack of protective immunity. Risk factors for CT and NG are distinct and may differ geographically, which should be considered when developing diagnostic tools or guiding presumptive treatment in specific populations.
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Affiliation(s)
- Sarah Connolly
- Emory Vaccine Center, Yerkes National Primate Research Center, Emory University, Atlanta, GA, USA.,Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Kristin M Wall
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA.,Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA, USA
| | - Rachel Parker
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA, USA.,Zambia-Emory HIV Research Project, Lusaka, Zambia
| | | | | | | | | | - Eric Hunter
- Emory Vaccine Center, Yerkes National Primate Research Center, Emory University, Atlanta, GA, USA.,Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA, USA
| | - Susan Allen
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA.,Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA, USA.,Zambia-Emory HIV Research Project, Lusaka, Zambia
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9
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Wall KM, Inambao M, Kilembe W, Karita E, Chomba E, Vwalika B, Mulenga J, Parker R, Sharkey T, Tichacek A, Hunter E, Yohnka R, Streeb G, Corso PS, Allen S. Cost-effectiveness of couples' voluntary HIV counselling and testing in six African countries: a modelling study guided by an HIV prevention cascade framework. J Int AIDS Soc 2020; 23 Suppl 3:e25522. [PMID: 32602618 PMCID: PMC7325504 DOI: 10.1002/jia2.25522] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 03/17/2020] [Accepted: 04/23/2020] [Indexed: 11/07/2022] Open
Abstract
INTRODUCTION Couples' voluntary HIV counselling and testing (CVCT) is a high-impact HIV prevention intervention in Rwanda and Zambia. Our objective was to model the cost-per-HIV infection averted by CVCT in six African countries guided by an HIV prevention cascade framework. The HIV prevention cascade as yet to be applied to evaluating CVCT effectiveness or cost-effectiveness. METHODS We defined a priority population for CVCT in Africa as heterosexual adults in stable couples. Based on our previous experience nationalizing CVCT in Rwanda and scaling-up CVCT in 73 clinics in Zambia, we estimated HIV prevention cascade domains of motivation for use, access and effectiveness of CVCT as model parameters. Costs-per-couple tested were also estimated based on our previous studies. We used these parameters as well as country-specific inputs to model the impact of CVCT over a five-year time horizon in a previously developed and tested deterministic compartmental model. We consider six countries across Africa with varied HIV epidemics (South Africa, Zimbabwe, Kenya, Tanzania, Ivory Coast and Sierra Leone). Outcomes of interest were the proportion of HIV infections averted by CVCT, nationwide CVCT implementation costs and costs-per-HIV infection averted by CVCT. We applied 3%/year discounting to costs and outcomes. Univariate and Monte Carlo multivariate sensitivity analyses were conducted. RESULTS We estimated that CVCT could avert between 54% (Sierra Leone) and 62% (South Africa) of adult HIV infections. Average costs-per-HIV infection averted were lowest in Zimbabwe ($550) and highest in South Africa ($1272). Nationwide implementations would cost between 7% (Kenya) and 21% (Ivory Coast) of a country's President's Emergency Plan for AIDS Relief (PEPFAR) budget over five years. In sensitivity analyses, model outputs were most sensitive to estimates of cost-per-couple tested; the proportion of adults in heterosexual couples and HIV prevention cascade domains of CVCT motivation and access. CONCLUSIONS Our model indicates that nationalized CVCT could prevent over half of adult HIV infections for 7% to 21% of the modelled countries' five-year PEPFAR budgets. While other studies have indicated that CVCT motivation is high given locally relevant promotional and educational efforts, without required indicators, targets and dedicated budgets, access remains low.
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Affiliation(s)
- Kristin M Wall
- Rwanda Zambia HIV Research GroupDepartment of Pathology & Laboratory MedicineSchool of Medicine and Hubert Department of Global HealthRollins School of Public HealthLaney Graduate SchoolEmory UniversityAtlantaGAUSA
- Department of EpidemiologyRollins School of Public HealthLaney Graduate SchoolEmory UniversityAtlantaGAUSA
| | - Mubiana Inambao
- Rwanda Zambia HIV Research GroupDepartment of Pathology & Laboratory MedicineSchool of Medicine and Hubert Department of Global HealthRollins School of Public HealthLaney Graduate SchoolEmory UniversityAtlantaGAUSA
- Department of Obstetrics and GynecologyNdola Central HospitalNdolaZambia
| | - William Kilembe
- Rwanda Zambia HIV Research GroupDepartment of Pathology & Laboratory MedicineSchool of Medicine and Hubert Department of Global HealthRollins School of Public HealthLaney Graduate SchoolEmory UniversityAtlantaGAUSA
| | - Etienne Karita
- Rwanda Zambia HIV Research GroupDepartment of Pathology & Laboratory MedicineSchool of Medicine and Hubert Department of Global HealthRollins School of Public HealthLaney Graduate SchoolEmory UniversityAtlantaGAUSA
| | | | - Bellington Vwalika
- Rwanda Zambia HIV Research GroupDepartment of Pathology & Laboratory MedicineSchool of Medicine and Hubert Department of Global HealthRollins School of Public HealthLaney Graduate SchoolEmory UniversityAtlantaGAUSA
- Department of Obstetrics and GynecologySchool of MedicineUniversity of ZambiaLusakaZambia
| | - Joseph Mulenga
- Rwanda Zambia HIV Research GroupDepartment of Pathology & Laboratory MedicineSchool of Medicine and Hubert Department of Global HealthRollins School of Public HealthLaney Graduate SchoolEmory UniversityAtlantaGAUSA
| | - Rachel Parker
- Rwanda Zambia HIV Research GroupDepartment of Pathology & Laboratory MedicineSchool of Medicine and Hubert Department of Global HealthRollins School of Public HealthLaney Graduate SchoolEmory UniversityAtlantaGAUSA
| | - Tyronza Sharkey
- Rwanda Zambia HIV Research GroupDepartment of Pathology & Laboratory MedicineSchool of Medicine and Hubert Department of Global HealthRollins School of Public HealthLaney Graduate SchoolEmory UniversityAtlantaGAUSA
| | - Amanda Tichacek
- Rwanda Zambia HIV Research GroupDepartment of Pathology & Laboratory MedicineSchool of Medicine and Hubert Department of Global HealthRollins School of Public HealthLaney Graduate SchoolEmory UniversityAtlantaGAUSA
| | - Eric Hunter
- Rwanda Zambia HIV Research GroupDepartment of Pathology & Laboratory MedicineSchool of Medicine and Hubert Department of Global HealthRollins School of Public HealthLaney Graduate SchoolEmory UniversityAtlantaGAUSA
- Department of Pathology & Laboratory MedicineSchool of MedicineEmory UniversityAtlantaGAUSA
- Emory Vaccine CenterYerkes National Primate Research CenterEmory UniversityAtlantaGAUSA
| | - Robert Yohnka
- Rwanda Zambia HIV Research GroupDepartment of Pathology & Laboratory MedicineSchool of Medicine and Hubert Department of Global HealthRollins School of Public HealthLaney Graduate SchoolEmory UniversityAtlantaGAUSA
| | - Gordon Streeb
- Departments of Economics and Political ScienceEmory UniversityAtlantaGAUSA
| | | | - Susan Allen
- Rwanda Zambia HIV Research GroupDepartment of Pathology & Laboratory MedicineSchool of Medicine and Hubert Department of Global HealthRollins School of Public HealthLaney Graduate SchoolEmory UniversityAtlantaGAUSA
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10
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Malama K, Kilembe W, Inambao M, Hoagland A, Sharkey T, Parker R, Wall KM, Tichacek A, Sarkar S, Vwalika B, Haddad L, Chomba E, Allen S. A couple-focused, integrated unplanned pregnancy and HIV prevention program in urban and rural Zambia. Am J Obstet Gynecol 2020; 222:S915.e1-S915.e10. [PMID: 31945337 PMCID: PMC8377731 DOI: 10.1016/j.ajog.2020.01.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 01/07/2020] [Accepted: 01/07/2020] [Indexed: 01/07/2023]
Abstract
BACKGROUND Zambia's total fertility rate (5 births per woman) and adult HIV prevalence (11.5%) are among the highest in the world, with heterosexual couples being the most affected group. Jointly counseling and testing couples for HIV has reduced up to 58% of new HIV infections in Zambian clinics. Married women using contraceptives in Zambia have a high (20%) unmet need for family planning and low (8.6%) uptake of cost-effective long-acting reversible contraceptives. We present an integrated counseling, testing, and family-planning program to prevent HIV and unplanned pregnancy in Zambia. OBJECTIVE The objective of this study was to integrate effective HIV prevention and family-planning services for Zambian couples. STUDY DESIGN A 3 year program (2013-2016) progressively integrated the promotion and provision of couples' voluntary HIV counseling and testing and long-acting reversible contraceptives. The program was based in 55 urban and 215 rural government clinics across 33 districts. In the first year, a couples' family-planning counseling training program was developed and combined with existing couples HIV counseling training materials. To avoid congestion during routine clinic hours, joint counseling services were initially provided on weekends, while nurses were trained in intrauterine device and hormonal implant insertion and removal during weekday family-planning services. Demand was created through mutual referral between weekend and weekday programs and by clinic staff, community health workers, and satisfied family-planning clients. When the bulk of integrated service training was completed, the program transitioned services to routine weekday clinic hours, ensuring access to same-day services. Performance indicators included number of staff trained, clients served, integrated service referrals, HIV infections averted, and unplanned pregnancies averted. RESULTS A stepwise approach trained high-performing service providers to be trainers and used high-volume clinics for practicum training of the next generation. In total, 1201 (391 urban, 810 rural) counselors were trained and served 120,535 urban and 87,676 rural couples. In urban clinics, 236 nurses inserted 65,619 long-acting reversible contraceptives, while in rural clinics, 243 nurses inserted 35,703 implants and intrauterine devices. The program prevented an estimated 12,869 urban and 8279 rural adult HIV infections, and 98,626 unintended urban pregnancies. In the final year, the proportion of clients receiving joint counseling services on weekdays rose from 11% to 89%, with many referred from within clinics including HIV testing and treatment services (32%), outpatient department (31%), family planning (16%), and infant vaccination (15%). The largest group of clients requesting long-acting reversible contraceptives (45%) did so after joint fertility goal-based counseling, confirming the high impact of this couple-focused demand creation approach. Remaining family-planning clients responded to referrals from clinic nurses (34%), satisfied implant/intrauterine device users (13%), or community health workers (8%). CONCLUSION Integrated HIV and unplanned pregnancy prevention can be implemented in low-resource public sector facilities. Combination services offered to couples mutually leverage HIV prevention and unplanned pregnancy prevention. The addition of long-acting reversible contraceptives is an important complement to the method mix available in government clinics. Demand creation in the clinic and in the community must be coordinated with a growing supply of well-trained providers.
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Affiliation(s)
- Kalonde Malama
- Aix Marseille University, INSERM, IRD, SESSTIM, Sciences Economiques and Sociales de la Santé and Traitement de l'Information Médicale, Marseille, France; ORS PACA, Observatoire Régional de la Santé Provence-Alpes-Côte d'Azurr, Marseille, France.
| | - William Kilembe
- Zambia Emory HIV Research Project, Rwanda Zambia HIV Research Group, Emory University, Lusaka, Zambia
| | - Mubiana Inambao
- Zambia Emory HIV Research Project, Rwanda Zambia HIV Research Group, Emory University, Lusaka, Zambia; Department of Obstetrics and Gynaecology, Ndola Central Hospital, Ndola, Zambia
| | - Alexandra Hoagland
- Zambia Emory HIV Research Project, Rwanda Zambia HIV Research Group, Emory University
| | - Tyronza Sharkey
- Zambia Emory HIV Research Project, Rwanda Zambia HIV Research Group, Emory University, Lusaka, Zambia
| | - Rachel Parker
- Rwanda Zambia HIV Research Group, the Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA
| | - Kristin M Wall
- Rwanda Zambia HIV Research Group, the Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA; Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, the Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA
| | - Supriya Sarkar
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA
| | - Bellington Vwalika
- Department of Obstetrics and Gynaecology, University of Zambia, School of Medicine, Lusaka, Zambia
| | - Lisa Haddad
- Department of Obstetrics and Gynaecology, School of Medicine, Emory University, Atlanta, GA
| | | | - Susan Allen
- Rwanda Zambia HIV Research Group, the Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA
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11
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Price MA, Rida W, Kilembe W, Karita E, Inambao M, Ruzagira E, Kamali A, Sanders EJ, Anzala O, Hunter E, Allen S, Edward VA, Wall KM, Tang J, Fast PE, Kaleebu P, Lakhi S, Mutua G, Bekker LG, Abu-Baker G, Tichacek A, Chetty P, Latka MH, Maenetje P, Makkan H, Kibengo F, Priddy F, Gilmour J. Control of the HIV-1 Load Varies by Viral Subtype in a Large Cohort of African Adults With Incident HIV-1 Infection. J Infect Dis 2020; 220:432-441. [PMID: 30938435 PMCID: PMC6603968 DOI: 10.1093/infdis/jiz127] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 03/22/2019] [Indexed: 12/14/2022] Open
Abstract
Few human immunodeficiency virus (HIV)–infected persons can maintain low viral levels without therapeutic intervention. We evaluate predictors of spontaneous control of the viral load (hereafter, “viral control”) in a prospective cohort of African adults shortly after HIV infection. Viral control was defined as ≥2 consecutively measured viral loads (VLs) of ≤10 000 copies/mL after the estimated date of infection, followed by at least 4 subsequent measurements for which the VL in at least 75% was ≤10 000 copies/mL in the absence of ART. Multivariable logistic regression characterized predictors of viral control. Of 590 eligible volunteers, 107 (18.1%) experienced viral control, of whom 25 (4.2%) maintained a VL of 51–2000 copies/mL, and 5 (0.8%) sustained a VL of ≤50 copies/mL. The median ART-free follow-up time was 3.3 years (range, 0.3–9.7 years). Factors independently associated with control were HIV-1 subtype A (reference, subtype C; adjusted odds ratio [aOR], 2.1 [95% confidence interval {CI}, 1.3–3.5]), female sex (reference, male sex; aOR, 1.8 [95% CI, 1.1–2.8]), and having HLA class I variant allele B*57 (reference, not having this allele; aOR, 1.9 [95% CI, 1.0–3.6]) in a multivariable model that also controlled for age at the time of infection and baseline CD4+ T-cell count. We observed strong associations between infecting HIV-1 subtype, HLA type, and sex on viral control in this cohort. HIV-1 subtype is important to consider when testing and designing new therapeutic and prevention technologies, including vaccines.
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Affiliation(s)
- Matt A Price
- International AIDS Vaccine Initiative, New York, New York.,Department of Epidemiology and Biostatistics, University of California-San Francisco
| | | | - William Kilembe
- Rwanda Zambia HIV Research Group, Lusaka and Ndola.,Rwanda Zambia HIV Research Group, Zambia and Kigali.,Rwanda Zambia HIV Research Group, Rwanda
| | - Etienne Karita
- Rwanda Zambia HIV Research Group, Lusaka and Ndola.,Rwanda Zambia HIV Research Group, Zambia and Kigali.,Rwanda Zambia HIV Research Group, Rwanda
| | - Mubiana Inambao
- Rwanda Zambia HIV Research Group, Lusaka and Ndola.,Rwanda Zambia HIV Research Group, Zambia and Kigali.,Rwanda Zambia HIV Research Group, Rwanda
| | | | - Anatoli Kamali
- International AIDS Vaccine Initiative, New York, New York
| | - Eduard J Sanders
- Kenyan Medical Research Institute-Wellcome Trust, Kilifi, Nairobi, Kenya.,Nuffield Department of Clinical Medicine, Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Headington, London, United Kingdom
| | - Omu Anzala
- KAVI Institute of Clinical Research, Nairobi, Kenya
| | - Eric Hunter
- Rwanda Zambia HIV Research Group, Lusaka and Ndola.,Rwanda Zambia HIV Research Group, Zambia and Kigali.,Rwanda Zambia HIV Research Group, Rwanda.,Department of Pathology and Laboratory Medicine, Emory University, Atlanta, Georgia
| | - Susan Allen
- Rwanda Zambia HIV Research Group, Lusaka and Ndola.,Rwanda Zambia HIV Research Group, Zambia and Kigali.,Rwanda Zambia HIV Research Group, Rwanda.,Department of Pathology and Laboratory Medicine, Emory University, Atlanta, Georgia
| | - Vinodh A Edward
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, Connecticut.,The Aurum Institute, South Africa.,School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, South Africa.,Advancing Care and Treatment for TB/HIV, South African Medical Research Council, Johannesburg, South Africa
| | - Kristin M Wall
- Rwanda Zambia HIV Research Group, Lusaka and Ndola.,Rwanda Zambia HIV Research Group, Zambia and Kigali.,Rwanda Zambia HIV Research Group, Rwanda.,Department of Epidemiology, Emory University, Atlanta, Georgia
| | - Jianming Tang
- Department of Medicine, University of Alabama-Birmingham
| | | | | | - Shabir Lakhi
- Rwanda Zambia HIV Research Group, Lusaka and Ndola.,Rwanda Zambia HIV Research Group, Zambia and Kigali.,Rwanda Zambia HIV Research Group, Rwanda
| | | | | | | | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Lusaka and Ndola.,Rwanda Zambia HIV Research Group, Zambia and Kigali.,Rwanda Zambia HIV Research Group, Rwanda.,Department of Epidemiology, Emory University, Atlanta, Georgia
| | - Paramesh Chetty
- International AIDS Vaccine Initiative, New York, New York.,International AIDS Vaccine Initiative Human Immunology Laboratory, London, United Kingdom
| | | | | | | | | | - Fran Priddy
- International AIDS Vaccine Initiative, New York, New York
| | - Jill Gilmour
- International AIDS Vaccine Initiative Human Immunology Laboratory, London, United Kingdom
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12
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Malama K, Sagaon-Teyssier L, Parker R, Tichacek A, Sharkey T, Kilembe W, Inambao M, Price MA, Spire B, Allen S. Factors associated with alcohol use before sex among HIV-negative female sex workers in Zambia. Int J STD AIDS 2020; 31:119-126. [PMID: 31948340 DOI: 10.1177/0956462419886159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Female sex workers (FSWs) are at high risk of HIV infection. Alcohol use prior to sex can compound this risk. We investigated the factors associated with having sex under the influence of alcohol among Zambian FSWs. Community health workers and peer FSWs recruited 331 HIV-negative FSWs in Lusaka and Ndola. In a cross-sectional survey, we asked FSWs how often they had sex under the influence of alcohol in the previous month and categorised responses as ‘always’ and ‘not always’. The adjusted odds ratios (AORs) of always having sex under the influence of alcohol were higher among FSWs who charged clients medium (AOR: 2.20, 95% confidence interval [CI]: 1.04–4.68) and low fees (AOR: 2.65, 95% CI: 1.26–5.60) for sex versus high fees; received 9–19 (AOR: 2.37, 95% CI: 1.15–4.91) and 20 or more clients per month (AOR: 3.06, 95% CI: 1.47–6.37) versus up to 8 clients per month; and never used condoms versus always used condoms with clients (AOR: 4.21, 95% CI: 1.53–11.55). FSWs who always used alcohol before sex appeared more likely to engage in riskier sex and charge clients lower fees. Interventions for financial empowerment and alcohol risk reduction should complement existing HIV prevention interventions for FSWs.
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Affiliation(s)
- Kalonde Malama
- Aix Marseille University, INSERM, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l'Information Médicale, Marseille, France.,ORS PACA, Observatoire Régional de la Santé Provence-Alpes-Côte d'Azur, Marseille, France
| | - Luis Sagaon-Teyssier
- Aix Marseille University, INSERM, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l'Information Médicale, Marseille, France.,ORS PACA, Observatoire Régional de la Santé Provence-Alpes-Côte d'Azur, Marseille, France
| | - Rachel Parker
- Rwanda Zambia HIV Research Group, Pathology & Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, USA
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Pathology & Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, USA
| | - Tyronza Sharkey
- Zambia Emory HIV Research Project, Rwanda Zambia HIV Research Group, Emory University, Lusaka, Zambia
| | - William Kilembe
- Zambia Emory HIV Research Project, Rwanda Zambia HIV Research Group, Emory University, Lusaka, Zambia
| | - Mubiana Inambao
- Zambia Emory HIV Research Project, Rwanda Zambia HIV Research Group, Emory University, Ndola, Zambia
| | - Matt A Price
- International AIDS Vaccine Initiative, New York, NY, USA.,Department of Epidemiology and Biostatistics, University of California at San Francisco, San Francisco, CA, USA
| | - Bruno Spire
- Aix Marseille University, INSERM, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l'Information Médicale, Marseille, France.,ORS PACA, Observatoire Régional de la Santé Provence-Alpes-Côte d'Azur, Marseille, France
| | - Susan Allen
- Rwanda Zambia HIV Research Group, Pathology & Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, USA
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Connolly S, Kilembe W, Inambao M, Visoiu AM, Sharkey T, Parker R, Hunter E, Allen S. 422. Pooling Strategy for Chlamydia trachomatis and Neisseria gonorrhoeae Reduces Cost of GeneXpert Molecular STI Screening in Two Limited-Resource Clinics in Zambia. Open Forum Infect Dis 2019. [PMCID: PMC6809951 DOI: 10.1093/ofid/ofz360.495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Background Risk of heterosexual HIV-1 transmission is elevated in the presence of sexually transmitted infections (STIs) such as chlamydia (CT) and gonorrhea (NG). Syndromic management is a common, low-resource, approach to detecting STIs. However, CT and/or NG infections in women are often asymptomatic and therefore missed by syndromic management. Molecular testing for STIs is highly sensitive, but time and cost restraints preclude implementation of these technologies in resource-limited settings. Pooling samples for testing together in GeneXpert cartridges is one strategy for reducing the cost per individual tested. Methods This project describes the development of a pooling strategy based on social and demographic factors associated with CT/NG prevalence rates in a cohort of high-risk women in Zambia. Logistic regression modeling was used to predict the probability of a positive CT/NG test result in the presence of various factors. Data from a 2016 cross-sectional sub-study on intra-vaginal practices in 509 women was examined and an easy-to-use diagnostic screening checklist was created to categorize women by probability of testing positive on the GeneXpert. An algorithm considering cost of each test and prevalence of disease in each group determined the optimal pool size for each risk category. Results Logistic regression identified CT/NG to be associated with: city, age, education, long-acting reversible contraception usage, and laboratory results for bacterial vaginosis, Trichomonas vaginalis, and incident syphilis on the day of CT/NG testing. Signs and symptoms were not found to be associated. The overall prevalence of either CT and/or NG infection in this population was 17%. Low, middle, and high-risk groups could be separated based on checklist score with 7.52%, 18.30%, and 46.51% CT/NG prevalence, respectively. Conclusion Pooling women with similar CT/NG predictive factors together, or testing those at highest risk individually, reduces the cost per test. Further implementation of this tool to guide presumptive treatment, in lieu of molecular testing, increases the cost-saving potential. The strategies described in this study are applicable to other low-resource clinical settings seeking to provide the accuracy of molecular testing with a reduced financial burden. Disclosures All authors: No reported disclosures.
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14
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Kilembe W, Inambao M, Sharkey T, Wall KM, Parker R, Himukumbwa C, Tichacek A, Malama K, Visoiu AM, Price M, Chomba E, Allen S. Single Mothers and Female Sex Workers in Zambia Have Similar Risk Profiles. AIDS Res Hum Retroviruses 2019; 35:814-825. [PMID: 31204869 DOI: 10.1089/aid.2019.0013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The aim of the study was to compare reproductive health and high-risk behaviors in female sex workers (FSWs) and single mothers (SMs) in Zambia's two largest cities, Lusaka and Ndola. FSWs were invited from known community hot spots, and sexually active HIV- SMs were referred from infant vaccination services for free and anonymous screening and treatment for HIV and other sexually transmitted infections (STIs) and long acting reversible contraception. A subset completed an interviewer-administered survey. From 2012 to 2016, 1,893 women (1,377 FSWs and 516 HIV- SMs) responded to referrals. HIV prevalence was 50% in Lusaka and 33% in Ndola FSWs. Positive syphilis serology (rapid plasmin reagin) was found in 29%-31% of HIV+ FSWs and 9%-12% of HIV- FSWs and SMs. Trichomonas was more common in Ndola (11%-12%), compared with Lusaka (3%-7%). Antiretroviral therapy (ART) use among HIV+ FSWs was 9%-15%. In all groups, consistent condom use (8%-11%) and modern contraceptive use (35%-65%) were low. Low literacy and reported coercion at first sexual intercourse were common in both FSWs and SMs, as was alcohol use during sex among FSWs. Zambian FSWs and SMs have low condom use and high HIV/STI and unplanned pregnancy risk. Many FSWs and half of SMs are ≥25 years of age, and thus too old for HIV prevention services targeting "adolescent girls and young women" (aged 15-24). Tailored and targeted reproductive health services are needed to reduce HIV, STI, and unplanned pregnancy in these vulnerable women.
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Affiliation(s)
| | | | | | - Kristin M. Wall
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia
| | - Rachel Parker
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia
| | | | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia
| | | | | | - Matt Price
- International AIDS Vaccine Initiative (IAVI), New York, New York
| | - Elwyn Chomba
- Levy Mwanawasa Medical University, Lusaka, Zambia
| | - Susan Allen
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia
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Wall KM, Inambao M, Kilembe W, Karita E, Vwalika B, Mulenga J, Parker R, Sharkey T, Sonti D, Tichacek A, Hunter E, Yohnka R, Abdallah JF, Thior I, Pulerwitz J, Allen S. HIV testing and counselling couples together for affordable HIV prevention in Africa. Int J Epidemiol 2019; 48:217-227. [PMID: 30358840 PMCID: PMC6380312 DOI: 10.1093/ije/dyy203] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2018] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The impact and cost-effectiveness of couples' voluntary HIV counselling and testing (CVCT) has not been quantified in real-world settings. We quantify cost-per-HIV-infection averted by CVCT in Zambia from the donor's perspective. METHODS From 2010 to 2016, CVCT was established in 73 Zambian government clinics. The cost-per-HIV-infection averted (CHIA) of CVCT was calculated using observed expenditures and effectiveness over longitudinal follow-up. These observed measures parameterized hypothetical 5-year nationwide implementations of: 'CVCT'; 'treatment-as-prevention (TasP) for discordant couples' identified by CVCT; and 'population TasP' for all HIV+ cohabiting persons identified by individual testing. RESULTS In all, 207 428 couples were tested (US $52/couple). Among discordant couples in which HIV+ partners self-reported antiretroviral therapy (ART), HIV incidence was 8.5/100 person-years before and 1.8/100 person-years after CVCT (79% reduction). Corresponding reductions for non-ART-using discordant and concordant negative couples were 63% and 47%, respectively. CVCT averted an estimated 58% of new infections at US $659 CHIA. In nationwide implementation models, CVCT would prevent 17 times the number of infections vs 'TasP for discordant couples' at 86% of the cost, and nine times the infections vs 'population TasP' at 28% of the cost. CONCLUSIONS CVCT is a cost-effective, feasible prevention strategy in Zambia. We demonstrate the novel, added effectiveness of providing CVCT to ART users, for whom ART use alone only partially mitigated transmission risk. Our results indicate a major policy shift (supporting development of CVCT indicators, budgets and targets) and have clinical implications (suggesting promotion of CVCT in ART clinics as a high-impact prevention strategy).
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Affiliation(s)
- Kristin M Wall
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School
- Department of Epidemiology, Laney Graduate School, Emory University, Atlanta, GA, USA
| | - Mubiana Inambao
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School
- Department of Obstetrics and Gynecology, Ndola Central Hospital, Ndola, Zambia
| | - William Kilembe
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School
| | - Etienne Karita
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School
| | - Bellington Vwalika
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School
- Department of Gynecology and Obstetrics, School of Medicine, University of Zambia, Lusaka, Zambia
| | - Joseph Mulenga
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School
| | - Rachel Parker
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School
| | - Tyronza Sharkey
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School
| | - Divya Sonti
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School
| | - Eric Hunter
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School
- Department of Pathology & Laboratory Medicine, School of Medicine
- Emory Vaccine Center at Yerkes National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Robert Yohnka
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School
| | - Joseph F Abdallah
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School
| | | | - Julie Pulerwitz
- Arise Program, HIV/AIDS and TB Global Program, PATH, Washington, DC, USA
- HIV and AIDS Program, Population Council, Washington, DC, USA
| | - Susan Allen
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Laney Graduate School
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Wu KY, Oppert M, Wall KM, Inambao M, Simpungwe MK, Ahmed N, Abdallah JF, Tichacek A, Allen SA. Couples' voluntary HIV counseling and testing provider training evaluation, Zambia. Health Promot Int 2018; 33:580-588. [PMID: 28119330 PMCID: PMC6144772 DOI: 10.1093/heapro/daw108] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
With the expansion of couples' voluntary HIV counseling and testing (CVCT) in urban Zambia, there is a growing need to evaluate CVCT provider trainings to ensure that couples are receiving quality counseling and care. We evaluated provider knowledge scores, pre- and post-training and predictors of pre- and post-training test scores. Providers operating in 67 government clinics in four Copperbelt Province cities were trained from 2008 to 2013 in three domains: counseling, rapid HIV laboratory testing and data management. Trainees received pre- and post-training tests on domain-specific topics. Pre- and post-training test scores were tabulated by provider demographics and training type, and paired t-tests evaluated differences in pre- and post-training test scores. Multivariable ANCOVA determined predictors of pre- and post-training test scores. We trained 1226 providers, and average test scores increased from 68.8% pre-training to 83.8% post-training (p < 0.001). Test scores increased significantly for every demographic group and training type (p < 0.001) with one exception-test scores did not significantly increase for those receiving counseling or data management training who had less than a high school education. In multivariable analysis, higher educational level and having a medical background were predictive of a higher pre-test score; higher pre-test scores and having a medical background were predictive of higher post-test scores. Pre- and post-test assessments are critical to ensure quality services, particularly as task-shifting from medical to lay staff becomes more common. Assessments showed that our CVCT trainings are successful at increasing knowledge, and that those with lower education may benefit from repeat trainings.
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Affiliation(s)
- Kathleen Y Wu
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia, USA
| | - Marydale Oppert
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia, USA
| | - Kristin M Wall
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia, USA
- Department of Epidemiology, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, Georgia, USA
| | - Mubiana Inambao
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia, USA
| | - Matildah K Simpungwe
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia, USA
- Ministry of Community Development, Mother and Child Health, Ndola District Community Health Office, Ndola, Zambia
| | - Nurilign Ahmed
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia, USA
| | - Joseph F Abdallah
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia, USA
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia, USA
| | - Susan A Allen
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia, USA
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Powers KA, Price MA, Karita E, Kamali A, Kilembe W, Allen S, Hunter E, Bekker LG, Lakhi S, Inambao M, Anzala O, Latka MH, Fast PE, Gilmour J, Sanders EJ. Prediction of extended high viremia among newly HIV-1-infected persons in sub-Saharan Africa. PLoS One 2018; 13:e0192785. [PMID: 29614069 PMCID: PMC5882095 DOI: 10.1371/journal.pone.0192785] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 01/30/2018] [Indexed: 01/05/2023] Open
Abstract
Objective Prompt identification of newly HIV-infected persons, particularly those who are most at risk of extended high viremia (EHV), allows important clinical and transmission prevention benefits. We sought to determine whether EHV could be predicted during early HIV infection (EHI) from clinical, demographic, and laboratory indicators in a large HIV-1 incidence study in Africa. Design Adults acquiring HIV-1 infection were enrolled in an EHI study assessing acute retroviral syndrome (ARS) symptoms and viral dynamics. Methods Estimated date of infection (EDI) was based on a positive plasma viral load or p24 antigen test prior to seroconversion, or the mid-point between negative and positive serological tests. EHV was defined as mean untreated viral load ≥5 log10 copies/ml 130–330 days post-EDI. We used logistic regression to develop risk score algorithms for predicting EHV based on sex, age, number of ARS symptoms, and CD4 and viral load at diagnosis. Results Models based on the full set of five predictors had excellent performance both in the full population (c-statistic = 0.80) and when confined to persons with each of three HIV-1 subtypes (c-statistic = 0.80–0.83 within subtypes A, C, and D). Reduced models containing only 2–4 predictors performed similarly. In a risk score algorithm based on the final full-population model, predictor scores were one for male sex and enrollment CD4<350 cells/mm3, and two for having enrollment viral load >4.9 log10 copies/ml. With a risk score cut-point of two, this algorithm was 85% sensitive (95% CI: 76%-91%) and 61% specific (55%-68%) in predicting EHV. Conclusions Simple risk score algorithms can reliably identify persons with EHI in sub-Saharan Africa who are likely to sustain high viral loads if treatment is delayed. These algorithms may be useful for prioritizing intensified efforts around care linkage and retention, treatment initiation, adherence support, and partner services to optimize clinical and prevention outcomes.
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Affiliation(s)
- Kimberly A. Powers
- Department of Epidemiology, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- * E-mail:
| | - Matthew A. Price
- International AIDS Vaccine Initiative, New York, New York, United States of America
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, United States of America
| | | | - Anatoli Kamali
- International AIDS Vaccine Initiative, New York, New York, United States of America
- Uganda Research Unit on AIDS, Uganda Virus Research Institute, Entebbe, Uganda
| | | | - Susan Allen
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, Georgia, United States of America
| | - Eric Hunter
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, Georgia, United States of America
| | - Linda-Gail Bekker
- Desmond Tutu HIV Centre, University of Cape Town, Cape Town, South Africa
| | - Shabir Lakhi
- Zambia-Emory Research Project, Lusaka & Copperbelt, Zambia
| | | | - Omu Anzala
- KAVI-ICR University of Nairobi, Nairobi, Kenya
| | | | - Patricia E. Fast
- International AIDS Vaccine Initiative, New York, New York, United States of America
| | - Jill Gilmour
- International AIDS Vaccine Initiative, New York, New York, United States of America
- Imperial College of Science, Technology and Medicine, London, United Kingdom
| | - Eduard J. Sanders
- Kenya Medical Research Institute, Kilifi, Kenya
- University of Oxford, Headington, United Kingdom
- University of Amsterdam, Amsterdam, The Netherlands
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18
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Inambao M, Kilembe W, Canary LA, Czaicki NL, Kakungu-Simpungwe M, Chavuma R, Wall KM, Tichacek A, Pulerwitz J, Thior I, Chomba E, Allen SA. Transitioning couple's voluntary HIV counseling and testing (CVCT) from stand-alone weekend services into routine antenatal and VCT services in government clinics in Zambia's two largest cities. PLoS One 2017; 12:e0185142. [PMID: 29036208 PMCID: PMC5642897 DOI: 10.1371/journal.pone.0185142] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 08/30/2017] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION Most HIV infections in Africa are acquired by married/cohabiting adults and WHO recommends couple's voluntary HIV counseling and testing (CVCT) for prevention. The handover from NGO-sponsored weekend CVCT to government-sponsored services in routine weekday antenatal care (ANC) and individual voluntary testing and counseling (VCT) services in Zambia's two largest cities from 2009-2015 is described. METHODS Government clinic counselors were trained to provide CVCT, and along with community health workers they promoted CVCT services in their clinic and surrounding areas. When client volume exceeded the capacity of on-duty staff in ANC and VCT, non-governmental organization (NGO) subsidies were offered for overtime pay. RESULTS Implementation of routine CVCT services varied greatly by clinic and city. The 12 highest volume clinics were examined further, while 13 clinics had CVCT numbers that were too low to warrant further investigation. In Lusaka, the proportion of pregnant women whose partners were tested rose from 2.6% in 2009 to a peak of 26.2% in 2012 and 24.8% in 2015. Corresponding reports in Ndola were 2.0% in 2009, 17.0% in 2012 and 14.5% in 2015. Obstacles to CVCT included: limited space and staffing, competing priorities, record keeping not adapted for couples, and few resources for promotion and increasing male involvement. Conflicting training models for 'partner testing' with men and women separately vs. CVCT with joint post-test counseling led to confusion in reporting to district health authorities. DISCUSSION A focused and sustained effort will be required to reach a meaningful number of couples with CVCT to prevent heterosexual and perinatal HIV transmission. Establishing targets and timelines, funding for dedicated and appropriately trained staff, adoption of standardized data recording instruments with couple-level indicators, and expansion of community and clinic-based promotions using proven models are recommended.
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Affiliation(s)
- Mubiana Inambao
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, United States of America
- Zambia Emory HIV Research Project (ZEHRP), Ndola, Zambia
| | - William Kilembe
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, United States of America
- Zambia Emory HIV Research Project (ZEHRP), Lusaka, Zambia
| | - Lauren A. Canary
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, United States of America
| | - Nancy L. Czaicki
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, United States of America
| | - Matilda Kakungu-Simpungwe
- District Health Management team (DHMT), Ministry of Community Development, Maternal and Child Health (MCDMCH), Lusaka, Zambia
| | - Roy Chavuma
- District Health Management team (DHMT), Ministry of Community Development, Maternal and Child Health (MCDMCH), Lusaka, Zambia
| | - Kristin M. Wall
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, United States of America
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, United States of America
| | | | - Ibou Thior
- PATH, Washington, DC, United States of America
| | - Elwyn Chomba
- Ministry of Community Development, Maternal and Child Health (MCDMCH), Lusaka, Zambia
| | - Susan A. Allen
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, United States of America
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Patel EU, Manucci J, Kahle EM, Lingappa JR, Morrow RA, Piwowar-Manning E, James A, Maluzi KF, Cheeba MM, Gray G, Kosloff B, Delany-Moretlwe S, Inambao M, Vwalika B, Quinn TC, Laeyendecker O. Erratum to: Precision of the Kalon Herpes Simplex Virus Type 2 IgG ELISA: an international inter-laboratory assessment. BMC Infect Dis 2017; 17:355. [PMID: 28525965 PMCID: PMC5437713 DOI: 10.1186/s12879-017-2454-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 05/09/2017] [Indexed: 11/10/2022] Open
Affiliation(s)
- Eshan U Patel
- Laboratory of Immunoregulation, Division of Intramural Research, NIAID, NIH, Baltimore, MD, USA
| | - Jordyn Manucci
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Erin M Kahle
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Jairam R Lingappa
- Departments of Medicine, Global Health, and Pediatrics, University of Washington, Seattle, WA, USA
| | - Rhoda Ashley Morrow
- Department of Laboratory Medicine, University of Washington, Seattle, WA, USA.,Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | | | - Anelet James
- Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch, South Africa
| | | | | | - Glenda Gray
- Perinatal HIV Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - Barry Kosloff
- London School of Hygiene and Tropical Medicine, London, UK.,ZAMBART, UNZA School of Medicine, Lusaka, Zambia
| | - Sinead Delany-Moretlwe
- Wits Reproductive Health and HIV Institute and University of the Witwatersrand, Johannesburg, South Africa
| | - Mubiana Inambao
- Zambia-Emory Research Project and Ndola Central Hospital, Ndola, Zambia
| | | | - Thomas C Quinn
- Laboratory of Immunoregulation, Division of Intramural Research, NIAID, NIH, Baltimore, MD, USA.,Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Oliver Laeyendecker
- Laboratory of Immunoregulation, Division of Intramural Research, NIAID, NIH, Baltimore, MD, USA. .,Department of Medicine, Johns Hopkins University, Baltimore, MD, USA. .,NIAID, NIH and SOM, JHU, 855 North Wolfe St., Rangos Building, Room 538A, Baltimore, MD, 21205, USA.
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20
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Patel EU, Manucci J, Kahle EM, Lingappa JR, Morrow RA, Piwowar-Manning E, James A, Maluzi KF, Cheeba MM, Gray G, Kosloff B, Delany-Moretlwe S, Inambao M, Vwalika B, Quinn TC, Laeyendecker O. Precision of the Kalon Herpes Simplex Virus Type 2 IgG ELISA: an international inter-laboratory assessment. BMC Infect Dis 2015; 15:398. [PMID: 26423888 PMCID: PMC4591065 DOI: 10.1186/s12879-015-1130-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 09/18/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The commercial Kalon HSV-2 IgG ELISA is currently recommended for research use in sub-Saharan Africa because of its superior accuracy compared to other serologic assays. However, there are no data on key precision parameters of Kalon such as inter-operator variation, repeatability, and reproducibility, thus contributing to a barrier for its acceptance and use in clinical trials in sub-Saharan Africa. We evaluated the analytical and field precision of the Kalon HSV-2 IgG ELISA. METHODS A total of 600 HIV-infected and uninfected serum samples from South Africa and Zambia, previously tested by the gold standard University of Washington HSV western blot (UW-WB), were tested using Kalon by two technologists in an United States reference laboratory. Aliquots of 183 samples were retested using Kalon by an on-site technologist in a South African laboratory and a Zambian laboratory. RESULTS Intra-assay variation was below 10 %. Intra-assay, intra-laboratory, and inter-laboratory correlation and agreement were significantly high (p < 0.01). In comparison to the UW-WB, accurate performance of Kalon was reproducible by each operator and laboratory. Receiver operating characteristic curve analysis indicated high selectivity of Kalon in the overall study population (area under the curve = 0.95, 95%CI = 0.92-0.97). DISCUSSION Kalon is a robust assay with high precision and reproducibility. Accordingly, operator errorlikely does not contribute to the variability observed in Kalon's specificity throughout sera from sub-Saharan Africa. CONCLUSIONS In populations with optimal diagnostic accuracy, Kalon is a reliable stand-alone method for on-site HSV-2 IgG antibody detection.
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Affiliation(s)
- Eshan U Patel
- Laboratory of Immunoregulation, Division of Intramural Research, NIAID, NIH, Baltimore, MD, USA
| | - Jordyn Manucci
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Erin M Kahle
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Jairam R Lingappa
- Departments of Medicine, Global Health, and Pediatrics, University of Washington, Seattle, WA, USA
| | - Rhoda Ashley Morrow
- Department of Laboratory Medicine, University of Washington, Seattle, WA, USA.,Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | | | - Anelet James
- Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch, South Africa
| | | | | | - Glenda Gray
- Perinatal HIV Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | | | - Sinead Delany-Moretlwe
- Wits Reproductive Health and HIV Institute and University of the Witwatersrand, Johannesburg, South Africa
| | - Mubiana Inambao
- Zambia-Emory Research Project and Ndola Central Hospital, Ndola, Zambia
| | | | - Thomas C Quinn
- Laboratory of Immunoregulation, Division of Intramural Research, NIAID, NIH, Baltimore, MD, USA.,Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Oliver Laeyendecker
- Laboratory of Immunoregulation, Division of Intramural Research, NIAID, NIH, Baltimore, MD, USA. .,Department of Medicine, Johns Hopkins University, Baltimore, MD, USA. .,NIAID, NIH and SOM, JHU, 855 North Wolfe St., Rangos Building, Room 538A, Baltimore, MD, 21205, USA.
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21
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Wall KM, Kilembe W, Inambao M, Chen YN, Mchoongo M, Kimaru L, Hammond YT, Sharkey T, Malama K, Fulton TR, Tran A, Halumamba H, Anderson S, Kishore N, Sarwar S, Finnegan T, Mark D, Allen SA. Implementation of an electronic fingerprint-linked data collection system: a feasibility and acceptability study among Zambian female sex workers. Global Health 2015; 11:27. [PMID: 26115656 PMCID: PMC4489038 DOI: 10.1186/s12992-015-0114-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 06/17/2015] [Indexed: 11/27/2022] Open
Abstract
Background Patient identification within and between health services is an operational challenge in many resource-limited settings. When following HIV risk groups for service provision and in the context of vaccine trials, patient misidentification can harm patient care and bias trial outcomes. Electronic fingerprinting has been proposed to identify patients over time and link patient data between health services. The objective of this study was to determine 1) the feasibility of implementing an electronic-fingerprint linked data capture system in Zambia and 2) the acceptability of this system among a key HIV risk group: female sex workers (FSWs). Methods Working with Biometrac, a US-based company providing biometric-linked healthcare platforms, an electronic fingerprint-linked data capture system was developed for use by field recruiters among Zambian FSWs. We evaluated the technical feasibility of the system for use in the field in Zambia and conducted a pilot study to determine the acceptability of the system, as well as barriers to uptake, among FSWs. Results We found that implementation of an electronic fingerprint-linked patient tracking and data collection system was feasible in this relatively resource-limited setting (false fingerprint matching rate of 1/1000 and false rejection rate of <1/10,000) and was acceptable among FSWs in a clinic setting (2 % refusals). However, our data indicate that less than half of FSWs are comfortable providing an electronic fingerprint when recruited while they are working. The most common reasons cited for not providing a fingerprint (lack of privacy/confidentiality issues while at work, typically at bars or lodges) could be addressed by recruiting women during less busy hours, in their own homes, in the presence of “Queen Mothers” (FSW organizers), or in the presence of a FSW that has already been fingerprinted. Conclusions Our findings have major implications for key population research and improved health services provision. However, more work needs to be done to increase the acceptability of the electronic fingerprint-linked data capture system during field recruitment. This study indicated several potential avenues that will be explored to increase acceptability.
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Affiliation(s)
- Kristin M Wall
- Department of Epidemiology, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, USA. .,Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, 1518 Clifton Road NE, CNR 4011, Atlanta, GA, 30322, USA.
| | - William Kilembe
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Lusaka, Zambia.
| | - Mubiana Inambao
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Ndola, Zambia.
| | - Yi No Chen
- Department of Epidemiology, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, USA.
| | - Mwaka Mchoongo
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Lusaka, Zambia.
| | - Linda Kimaru
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Ndola, Zambia.
| | - Yuna Tiffany Hammond
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Lusaka, Zambia.
| | - Tyronza Sharkey
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Lusaka, Zambia.
| | - Kalonde Malama
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Ndola, Zambia.
| | - T Roice Fulton
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, 1518 Clifton Road NE, CNR 4011, Atlanta, GA, 30322, USA. .,Gavi, the Vaccine Alliance, Geneva, Switzerland.
| | - Alex Tran
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, 1518 Clifton Road NE, CNR 4011, Atlanta, GA, 30322, USA.
| | - Hanzunga Halumamba
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Lusaka, Zambia.
| | - Sarah Anderson
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, Lusaka, Zambia. .,Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden.
| | - Nishant Kishore
- Department of Epidemiology, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, USA.
| | | | | | - David Mark
- International AIDS Vaccine Initiative, New York, NY, USA.
| | - Susan A Allen
- Rwanda Zambia HIV Research Group, Department of Pathology and Laboratory Medicine, School of Medicine and Hubert Department of Global Health, Rollins School of Public Health, Emory University, 1518 Clifton Road NE, CNR 4011, Atlanta, GA, 30322, USA.
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Kamali A, Price MA, Lakhi S, Karita E, Inambao M, Sanders EJ, Anzala O, Latka MH, Bekker LG, Kaleebu P, Asiki G, Ssetaala A, Ruzagira E, Allen S, Farmer P, Hunter E, Mutua G, Makkan H, Tichacek A, Brill IK, Fast P, Stevens G, Chetty P, Amornkul PN, Gilmour J. Creating an African HIV clinical research and prevention trials network: HIV prevalence, incidence and transmission. PLoS One 2015; 10:e0116100. [PMID: 25602351 PMCID: PMC4300215 DOI: 10.1371/journal.pone.0116100] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 12/03/2014] [Indexed: 11/18/2022] Open
Abstract
HIV epidemiology informs prevention trial design and program planning. Nine clinical research centers (CRC) in sub-Saharan Africa conducted HIV observational epidemiology studies in populations at risk for HIV infection as part of an HIV prevention and vaccine trial network. Annual HIV incidence ranged from below 2% to above 10% and varied by CRC and risk group, with rates above 5% observed in Zambian men in an HIV-discordant relationship, Ugandan men from Lake Victoria fishing communities, men who have sex with men, and several cohorts of women. HIV incidence tended to fall after the first three months in the study and over calendar time. Among suspected transmission pairs, 28% of HIV infections were not from the reported partner. Volunteers with high incidence were successfully identified and enrolled into large scale cohort studies. Over a quarter of new cases in couples acquired infection from persons other than the suspected transmitting partner.
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Affiliation(s)
- Anatoli Kamali
- Medical Research Council/Uganda Virus Research Institute, Uganda Research Unit on AIDS, Entebbe, Uganda
| | - Matt A. Price
- International AIDS Vaccine Initiative (IAVI), New York, New York, United States of America
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, United States of America
- * E-mail:
| | - Shabir Lakhi
- Zambia-Emory HIV Research Project, Lusaka and Copperbelt, Zambia
| | | | - Mubiana Inambao
- Zambia-Emory HIV Research Project, Lusaka and Copperbelt, Zambia
| | - Eduard J. Sanders
- Centre for Geographic Medicine-Coast/KEMRI, Kilifi, Kenya
- University of Oxford, Oxford, United Kingdom
| | - Omu Anzala
- Kenya AIDS Vaccine Institute—Institute of Clinical Research, Nairobi, Kenya
| | - Mary H. Latka
- Aurum Institute, Rustenburg and Johannesburg, South Africa
| | - Linda-Gail Bekker
- Desmond Tutu HIV Centre, University of Cape Town, Cape Town, South Africa
| | - Pontiano Kaleebu
- Medical Research Council/Uganda Virus Research Institute, Uganda Research Unit on AIDS, Entebbe, Uganda
| | - Gershim Asiki
- Medical Research Council/Uganda Virus Research Institute, Uganda Research Unit on AIDS, Entebbe, Uganda
| | - Ali Ssetaala
- IAVI-UVRI HIV Vaccine Program, Entebbe and Masaka, Uganda
| | - Eugene Ruzagira
- Medical Research Council/Uganda Virus Research Institute, Uganda Research Unit on AIDS, Entebbe, Uganda
| | - Susan Allen
- Emory University, Atlanta, Georgia, United States of America
| | - Paul Farmer
- Emory University, Atlanta, Georgia, United States of America
| | - Eric Hunter
- Emory University, Atlanta, Georgia, United States of America
| | - Gaudensia Mutua
- Kenya AIDS Vaccine Institute—Institute of Clinical Research, Nairobi, Kenya
| | - Heeran Makkan
- Aurum Institute, Rustenburg and Johannesburg, South Africa
| | - Amanda Tichacek
- Emory University, Atlanta, Georgia, United States of America
| | - Ilene K. Brill
- University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Pat Fast
- International AIDS Vaccine Initiative (IAVI), New York, New York, United States of America
| | | | | | - Pauli N. Amornkul
- International AIDS Vaccine Initiative (IAVI), New York, New York, United States of America
| | - Jill Gilmour
- IAVI Human Immunology Laboratory, Imperial College, London, United Kingdom
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Allen S, Kilembe W, Inambao M, Vwalika B, Lakhi S, Wall K, Tichacek A, Streeb G. Choosing Appropriate Interventions and Defining Locally Achievable Standard of Care for HIV Prevention Trials in Africa: A Multidisciplinary Approach. AIDS Res Hum Retroviruses 2014. [DOI: 10.1089/aid.2014.5205.abstract] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Susan Allen
- Rwanda Zambia HIV Research Group, Emory University, Pathology & Laboratory Medicine, School of Medicine, Atlanta, GA, United States
| | - William Kilembe
- Rwanda Zambia HIV Research Group, Emory University, Zambia Emory HIV Research Project, Lusaka, Zambia
| | - Mubiana Inambao
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Ndola, Zambia
| | - Bellington Vwalika
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Lusaka, Zambia
| | - Shabir Lakhi
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Lusaka, Zambia
| | - Kristin Wall
- Emory University School of Public Health, Epidemiology, Atlanta, GA, United States
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Emory University, Pathology & Laboratory Medicine, School of Medicine, Atlanta, GA, United States
| | - Gordon Streeb
- Emory University, Economics and Political Science, Atlanta, GA, United States
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Allen S, Kilembe W, Inambao M, Parker R, Sharkey T, Munir N, Kimaru L, Scherber S, Wall K, Tichacek A, Vwalika B, Hunter E, Mulenga J, Chomba E. Couples' Voluntary HIV Counseling and Testing (CVCT) Followed by Treatment as Prevention (TasP) for Discordant Couples: The Impact of Each Step. AIDS Res Hum Retroviruses 2014. [DOI: 10.1089/aid.2014.5646.abstract] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Susan Allen
- Rwanda Zambia HIV Research Group-Emory University, Pathology & Laboratory Medicine, School of Medicine, Atlanta, GA, United States
| | - William Kilembe
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Lusaka, Zambia
| | - Mubiana Inambao
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Ndola, Zambia
| | - Rachel Parker
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, SOM, Emory University, Atlanta, GA, United States
| | - Tyronza Sharkey
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Lusaka, Zambia
| | - Naeemah Munir
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Ndola, Zambia
| | - Linda Kimaru
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Ndola, Zambia
| | - Sam Scherber
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Lusaka, Zambia
| | - Kristin Wall
- Emory University School of Public Health, Epidemiology, Atlanta, GA, United States
- Rwanda Zambia HIV Research Group, Lusaka, Zambia
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Department of Pathology & Laboratory Medicine, SOM, Emory University, Atlanta, GA, United States
| | - Bellington Vwalika
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Lusaka, Zambia
| | - Eric Hunter
- Emory University School of Medicine, Department of Pathology & Laboratory Medicine, Atlanta, GA, United States
| | | | - Elwyn Chomba
- Ministry of Community Medicine, Maternal & Child Health, Permanent Secretary, Lusaka, Zambia
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Kimaru LJ, Sharkey T, Oppert M, Wu K, Parker R, Kilembe W, Inambao M, Tichacek A, Allen S. Zambia FSW-risks Descriptors: HIV, Retention, Condom Use and Trichomonas Vaginalis/Sperm Trends over Time. AIDS Res Hum Retroviruses 2014. [DOI: 10.1089/aid.2014.5467.abstract] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | | | - Marydale Oppert
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
| | - Kathleen Wu
- Rwanda Zambia HIV Research Group, Lusaka, Zambia
| | - Rachel Parker
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
| | | | | | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
| | - Susan Allen
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
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26
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Inambao M, Munir N, Wu K, Dang D, Ahmed N, Getachew B, Kilembe W, Vwalika B, Tichacek A, Allen S. Preparing for HIV Prevention Trials: From Training to Service Delivery-lessons Learned with Long Acting Reversible Contraception (LARC) in Zambia. AIDS Res Hum Retroviruses 2014. [DOI: 10.1089/aid.2014.5569.abstract] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Mubiana Inambao
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Ndola, Zambia
| | - Naeemah Munir
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Ndola, Zambia
| | - Kathleen Wu
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Lusaka, Zambia
| | - Danielle Dang
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Lusaka, Zambia
| | - Nurilign Ahmed
- Rwanda Zambia HIV Research Group, Projet San Francisco, Kigali, Rwanda
| | - Bethelihem Getachew
- Rwanda Zambia HIV Research Group, Emory University, School of Medicine, Atlanta, GA, United States
| | - William Kilembe
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Lusaka, Zambia
| | - Bellington Vwalika
- Rwanda Zambia HIV Research Group, Zambia Emory HIV Research Project, Lusaka, Zambia
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Emory University, Pathology & Laboratory Medicine, School of Medicine, Atlanta, GA, United States
| | - Susan Allen
- Rwanda Zambia HIV Research Group, Emory University, Pathology & Laboratory Medicine, School of Medicine, Atlanta, GA, United States
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Wall KM, Kilembe W, Inambao M, Fulton R, Anderson S, Tran A, Mark D, Sarwar S, Finnegan T, Allen S. Implementation of an Electronic Fingerprinting Data Collection System in Zambia: Technical Challenges. AIDS Res Hum Retroviruses 2014. [DOI: 10.1089/aid.2014.5363.abstract] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Kristin M. Wall
- Emory University, Atlanta, GA, United States
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
| | | | | | - Roice Fulton
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
| | | | - Alex Tran
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
| | - David Mark
- International AIDS Vaccine Initiative, New York, NY, United States
| | | | | | - Susan Allen
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
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Sharkey T, Parker R, Kilembe W, Inambao M, Priddy F, Fast P, Price M, Tichacek A, Hunter E, Allen S. Use of Virtual Cohorts in Zambia's Couples' Voluntary Counseling and Testing (CVCT) as a Screening Mechanism for Clinical Trials. AIDS Res Hum Retroviruses 2014. [DOI: 10.1089/aid.2014.5271.abstract] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Tyronza Sharkey
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
- Zambia Emory HIV Research Project, Lusaka, Zambia
| | - Rachel Parker
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
- Emory University, Atlanta, GA, United States
| | - William Kilembe
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
- Zambia Emory HIV Research Project, Lusaka, Zambia
| | - Mubiana Inambao
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
- Zambia Emory HIV Research Project, Ndola, Zambia
| | - Frances Priddy
- International AIDS Vaccine Initiative (IAVI)-New York, New York City, NY, United States
| | - Pat Fast
- International AIDS Vaccine Initiative (IAVI)-New York, New York City, NY, United States
| | - Matt Price
- International AIDS Vaccine Initiative (IAVI)-New York, New York City, NY, United States
| | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
- Emory University, Atlanta, GA, United States
| | - Eric Hunter
- Emory University, Atlanta, GA, United States
| | - Susan Allen
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
- Emory University, Atlanta, GA, United States
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Ahmed N, Appiagyei A, Mwaanga A, Robinson C, Sinabamenye R, Gudo E, Banda H, Mulenga M, Mutumwinka B, Siangonya B, Kilembe W, Inambao M, Karita E, Allen S. Impact of South-to-South Technical Assistance from Rwanda & Zambia in Couples Voluntary HIV Counseling and Testing (CVCT) Achievements in 19 Countries. AIDS Res Hum Retroviruses 2014. [DOI: 10.1089/aid.2014.5208.abstract] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | | | | | | | | | - Elias Gudo
- Zambia Emory HIV Research Project, Lusaka, Zambia
| | - Helman Banda
- Zambia Emory HIV Research Project, Lusaka, Zambia
| | | | | | | | | | | | | | - Susan Allen
- Emory University, School of Medicine, Department of Pathology and Laboratory Medicine, Atlanta, GA, United States
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Kotlewski JA, Kimaru L, Sharkey T, Oppert MA, Kilembe W, Inambao M, Nkwihoreze H, Tichacek A, Ahmed N, Parker R, Allen S. HIV and Sexually Transmitted Infection (STI) Testing among Female Sex Workers (FSWs) in Urban Zambia. AIDS Res Hum Retroviruses 2014. [DOI: 10.1089/aid.2014.5267.abstract] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | | | | | | | | | | | | | - Amanda Tichacek
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
| | | | - Rachel Parker
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
| | - Susan Allen
- Rwanda Zambia HIV Research Group, Atlanta, GA, United States
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Czaicki NL, Davitte J, Siangonya B, Kastner R, Ahmed N, Khu NH, Kuo WH, Abdallah J, Wall KM, Tichacek A, Inambao M, Simpungwe K, Thior I, Allen S. Predictors of first follow-up HIV testing for couples' voluntary HIV counseling and testing in Ndola, Zambia. J Acquir Immune Defic Syndr 2014; 66:e1-7. [PMID: 24326600 PMCID: PMC3981940 DOI: 10.1097/qai.0000000000000076] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
INTRODUCTION We describe predictors of first follow-up testing for concordant negative and discordant couples seeking joint voluntary HIV counseling and testing in Ndola, Zambia, where cohabiting couples account for an estimated two-thirds of incident HIV infections. METHODS Demographic and serostatus data were collected from couples' voluntary HIV testing and counseling and follow-up testing services implemented in government clinics. We calculated follow-up testing rates by serostatus and compared rates before and after the introduction of a Good Health Package (GHP). RESULTS The follow-up testing rate from May 2011 to December 2012 was 12.2% for concordant negative (M-F-) couples and 24.5% for discordant (M+F- or M-F+) couples. Significant predictors of follow-up testing in multivariate analyses included increasing age of the man [adjusted odds ratio (aOR) = 1.02 per year] and the woman (aOR = 1.02 per year), and either partner being HIV+ (aOR = 2.57 for HIV+ man, aOR = 1.89 for HIV+ woman). The man (aOR = 1.29) and the couple (aOR = 1.22) having been previously tested for HIV were predictive of follow-up testing among concordant negative couples. Introduction of a GHP increased follow-up testing among discordant (aOR = 2.93) and concordant negative (aOR = 2.06) couples. CONCLUSIONS A low-cost GHP, including prevention, screening, and treatment for common causes of morbidity and mortality resulted in increased follow-up testing rates among HIV discordant and concordant negative couples. Overall follow-up testing rates remain low, and efforts to increase these rates are necessary to ensure linkage to combination prevention, reduce HIV transmission within couples, and identify seroconversions promptly. Further investigation of low-cost sustainable incentives and other factors influencing follow-up HIV testing for couples is needed.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Kristin M Wall
- Department of Epidemiology, Rollins School of Public
Health, Emory University, Atlanta, Georgia, USA
| | | | | | | | - Ibou Thior
- Program for Appropriate Technology in Health (PATH),
Washington, DC, USA
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Czaicki N, Davitte J, Siangonya B, Thior I, Pulerwitz J, Inambao M, Allen S. Progress and challenges in integrating CVCT into routine antenatal services in government clinics in Ndola, Zambia. Retrovirology 2012. [PMCID: PMC3441963 DOI: 10.1186/1742-4690-9-s2-p217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Hughes JP, Baeten JM, Lingappa JR, Magaret AS, Wald A, de Bruyn G, Kiarie J, Inambao M, Kilembe W, Farquhar C, Celum C. Determinants of per-coital-act HIV-1 infectivity among African HIV-1-serodiscordant couples. J Infect Dis 2012; 205:358-65. [PMID: 22241800 DOI: 10.1093/infdis/jir747] [Citation(s) in RCA: 254] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Knowledge of factors that affect per-act infectivity of human immunodeficiency virus type 1 (HIV-1) is important for designing HIV-1 prevention interventions and for the mathematical modeling of the spread of HIV-1. METHODS We analyzed data from a prospective study of African HIV-1-serodiscordant couples. We assessed transmissions for linkage within the study partnership, based on HIV-1 sequencing. The primary exposure measure was the HIV-1-seropositive partners' reports of number of sex acts and condom use with their study partner. RESULTS Of 3297 couples experiencing 86 linked HIV-1 transmissions, the unadjusted per-act risks of unprotected male-to-female (MTF) and female-to-male (FTM) transmission were 0.0019 (95% confidence interval [CI], .0010-.0037) and 0.0010 (95% CI, .00060-.0017), respectively. After adjusting for plasma HIV-1 RNA of the HIV-1-infected partner and herpes simplex virus type 2 serostatus and age of the HIV-1-uninfected partner, we calculated the relative risk (RR) for MTF versus FTM transmission to be 1.03 (P = .93). Each log(10) increase in plasma HIV-1 RNA increased the per-act risk of transmission by 2.9-fold (95% CI, 2.2-3.8). Self-reported condom use reduced the per-act risk by 78% (RR = 0.22 [95% CI, .11-.42]). CONCLUSIONS Modifiable risk factors for HIV-1 transmission were plasma HIV-1 RNA level and condom use, and, in HIV-1-uninfected partners, herpes simplex virus 2 infection, genital ulcers, Trichomonas vaginalis, vaginitis or cervicitis, and male circumcision.
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Affiliation(s)
- James P Hughes
- Department of Biostatistics, University of Washington, Seattle 98195-7232, USA.
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Lambdin BH, Kanweka W, Inambao M, Mwananyanda L, Shah HD, Linton S, Wong F, Luisi N, Tichacek A, Kalowa J, Chomba E, Allen S. Local residents trained as 'influence agents' most effective in persuading African couples on HIV counseling and testing. Health Aff (Millwood) 2011; 30:1488-97. [PMID: 21821565 DOI: 10.1377/hlthaff.2009.0994] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Couples in sub-Saharan Africa are the largest group in the world at risk for HIV infection. Couples counseling and testing programs have been shown to reduce HIV transmission, but such programs remain rare in Africa. Before couples counseling and testing can become the norm, it is essential to increase demand for the services. We evaluated the effectiveness of several promotional strategies during a two-year program in Kitwe and Ndola, Zambia. The program attracted more than 7,600 couples through the use of radio broadcasts, billboards, and other strategies. The most effective recruiting technique was the use of local residents trained as "influence agents" to reach out to friends, neighbors, and others in their sphere of influence.
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Baeten JM, Donnell D, Kapiga SH, Ronald A, John-Stewart G, Inambao M, Manongi R, Vwalika B, Celum C. Male circumcision and risk of male-to-female HIV-1 transmission: a multinational prospective study in African HIV-1-serodiscordant couples. AIDS 2010; 24:737-44. [PMID: 20042848 DOI: 10.1097/qad.0b013e32833616e0] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Male circumcision reduces female-to-male HIV-1 transmission risk by approximately 60%. Data assessing the effect of circumcision on male-to-female HIV-1 transmission are conflicting, with one observational study among HIV-1-serodiscordant couples showing reduced transmission but a randomized trial suggesting no short-term benefit of circumcision. DESIGN/METHODS Data collected as part of a prospective study among African HIV-1-serodiscordant couples were analyzed for the relationship between circumcision status of HIV-1-seropositive men and risk of HIV-1 acquisition among their female partners. Circumcision status was determined by physical examination. Cox proportional hazards analysis was used. RESULTS A total of 1096 HIV-1-serodiscordant couples in which the male partner was HIV-1-infected were followed for a median of 18 months; 374 (34%) male partners were circumcised. Sixty-four female partners seroconverted to HIV-1 (incidence 3.8 per 100 person-years). Circumcision of the male partner was associated with a nonstatistically significant approximately 40% lower risk of HIV-1 acquisition by the female partner (hazard ratio 0.62, 95% confidence interval 0.35-1.10, P = 0.10). The magnitude of this effect was similar when restricted to the subset of HIV-1 transmission events confirmed by viral sequencing to have occurred within the partnership (n = 50, hazard ratio 0.57, P = 0.11), after adjustment for male partner plasma HIV-1 concentrations (hazard ratio 0.60, P = 0.13), and when excluding follow-up time for male partners who initiated antiretroviral therapy (hazard ratio 0.53, P = 0.07). CONCLUSION Among HIV-1-serodiscordant couples in which the HIV-1-seropositive partner was male, we observed no increased risk and potentially decreased risk from circumcision on male-to-female transmission of HIV-1.
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Lingappa JR, Baeten JM, Wald A, Hughes JP, Thomas KK, Mujugira A, Mugo N, Bukusi EA, Cohen CR, Katabira E, Ronald A, Kiarie J, Farquhar C, Stewart GJ, Makhema J, Essex M, Were E, Fife KH, de Bruyn G, Gray GE, McIntyre JA, Manongi R, Kapiga S, Coetzee D, Allen S, Inambao M, Kayitenkore K, Karita E, Kanweka W, Delany S, Rees H, Vwalika B, Magaret AS, Wang RS, Kidoguchi L, Barnes L, Ridzon R, Corey L, Celum C. Daily acyclovir for HIV-1 disease progression in people dually infected with HIV-1 and herpes simplex virus type 2: a randomised placebo-controlled trial. Lancet 2010; 375:824-33. [PMID: 20153888 PMCID: PMC2877592 DOI: 10.1016/s0140-6736(09)62038-9] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Most people infected with HIV-1 are dually infected with herpes simplex virus type 2. Daily suppression of this herpes virus reduces plasma HIV-1 concentrations, but whether it delays HIV-1 disease progression is unknown. We investigated the effect of acyclovir on HIV-1 progression. METHODS In a trial with 14 sites in southern Africa and east Africa, 3381 heterosexual people who were dually infected with herpes simplex virus type 2 and HIV-1 were randomly assigned in a 1:1 ratio to acyclovir 400 mg orally twice daily or placebo, and were followed up for up to 24 months. Eligible participants had CD4 cell counts of 250 cells per mL or higher and were not taking antiretroviral therapy. We used block randomisation, and patients and investigators were masked to treatment allocation. Effect of acyclovir on HIV-1 disease progression was defined by a primary composite endpoint of first occurrence of CD4 cell counts of fewer than 200 cells per microL, antiretroviral therapy initiation, or non-trauma related death. As an exploratory analysis, we assessed the endpoint of CD4 falling to <350 cells per microL. Analysis was by intention to treat. The trial is registered with ClinicalTrials.gov, number NCT00194519. FINDINGS At enrollment, the median CD4 cell count was 462 cells per microL and median HIV-1 plasma RNA was 4.1 log(10) copies per microL. Acyclovir reduced risk of HIV-1 disease progression by 16%; 284 participants assigned acyclovir versus 324 assigned placebo reached the primary endpoint (hazard ratio [HR] 0.84, 95% CI 0.71-0.98, p=0.03). In those with CD4 counts >or=350 cells per microL, aciclovir delayed risk of CD4 cell counts falling to <350 cells per microL by 19% (0.81, 0.71-0.93, p=0.002) INTERPRETATION The role of suppression of herpes simplex virus type 2 in reduction of HIV-1 disease progression before initiation of antiretroviral therapy warrants consideration. FUNDING Bill & Melinda Gates Foundation.
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Celum C, Wald A, Lingappa JR, Magaret AS, Wang RS, Mugo N, Mujugira A, Baeten JM, Mullins JI, Hughes JP, Bukusi EA, Cohen CR, Katabira E, Ronald A, Kiarie J, Farquhar C, Stewart GJ, Makhema J, Essex M, Were E, Fife KH, de Bruyn G, Gray GE, McIntyre JA, Manongi R, Kapiga S, Coetzee D, Allen S, Inambao M, Kayitenkore K, Karita E, Kanweka W, Delany S, Rees H, Vwalika B, Stevens W, Campbell MS, Thomas KK, Coombs RW, Morrow R, Whittington WLH, McElrath MJ, Barnes L, Ridzon R, Corey L. Acyclovir and transmission of HIV-1 from persons infected with HIV-1 and HSV-2. N Engl J Med 2010; 362:427-39. [PMID: 20089951 PMCID: PMC2838503 DOI: 10.1056/nejmoa0904849] [Citation(s) in RCA: 390] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Most persons who are infected with human immunodeficiency virus type 1 (HIV-1) are also infected with herpes simplex virus type 2 (HSV-2), which is frequently reactivated and is associated with increased plasma and genital levels of HIV-1. Therapy to suppress HSV-2 reduces the frequency of reactivation of HSV-2 as well as HIV-1 levels, suggesting that suppression of HSV-2 may reduce the risk of transmission of HIV-1. METHODS We conducted a randomized, placebo-controlled trial of suppressive therapy for HSV-2 (acyclovir at a dose of 400 mg orally twice daily) in couples in which only one of the partners was seropositive for HIV-1 (CD4 count, > or = 250 cells per cubic millimeter) and that partner was also infected with HSV-2 and was not taking antiretroviral therapy at the time of enrollment. The primary end point was transmission of HIV-1 to the partner who was not initially infected with HIV-1; linkage of transmissions was assessed by means of genetic sequencing of viruses. RESULTS A total of 3408 couples were enrolled at 14 sites in Africa. Of the partners who were infected with HIV-1, 68% were women, and the baseline median CD4 count was 462 cells per cubic millimeter. Of 132 HIV-1 seroconversions that occurred after randomization (an incidence of 2.7 per 100 person-years), 84 were linked within couples by viral sequencing: 41 in the acyclovir group and 43 in the placebo group (hazard ratio with acyclovir, 0.92, 95% confidence interval [CI], 0.60 to 1.41; P=0.69). Suppression with acyclovir reduced the mean plasma concentration of HIV-1 by 0.25 log(10) copies per milliliter (95% CI, 0.22 to 0.29; P<0.001) and the occurrence of HSV-2-positive genital ulcers by 73% (risk ratio, 0.27; 95% CI, 0.20 to 0.36; P<0.001). A total of 92% of the partners infected with HIV-1 and 84% of the partners not infected with HIV-1 remained in the study for 24 months. The level of adherence to the dispensed study drug was 96%. No serious adverse events related to acyclovir were observed. CONCLUSIONS Daily acyclovir therapy did not reduce the risk of transmission of HIV-1, despite a reduction in plasma HIV-1 RNA of 0.25 log(10) copies per milliliter and a 73% reduction in the occurrence of genital ulcers due to HSV-2. (ClinicalTrials.gov number, NCT00194519.)
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Affiliation(s)
- C Celum
- Department of Global Health, University of Washington, Harborview Medical Center, 325 Ninth Ave., Box 359927, Seattle, WA 98104, USA
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Lingappa JR, Kahle E, Mugo N, Mujugira A, Magaret A, Baeten J, Bukusi EA, Cohen CR, Katabira E, Ronald A, Kiarie J, Farquhar C, Stewart GJ, Makhema J, Essex M, Were E, Fife K, deBruyn G, Gray G, McIntyre J, Manongi R, Kapiga S, Coetzee D, Allen S, Inambao M, Kayitenkore K, Karita E, Kanweka W, Delany S, Rees H, Vwalika B, Coombs RW, Morrow R, Whittington W, Corey L, Wald A, Celum C. Characteristics of HIV-1 discordant couples enrolled in a trial of HSV-2 suppression to reduce HIV-1 transmission: the partners study. PLoS One 2009; 4:e5272. [PMID: 19404392 PMCID: PMC2671170 DOI: 10.1371/journal.pone.0005272] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2009] [Accepted: 03/19/2009] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The Partners HSV-2/HIV-1 Transmission Study (Partners Study) is a phase III, placebo-controlled trial of daily acyclovir for genital herpes (HSV-2) suppression among HIV-1/HSV-2 co-infected persons to reduce HIV-1 transmission to their HIV-1 susceptible partners, which requires recruitment of HIV-1 serodiscordant heterosexual couples. We describe the baseline characteristics of this cohort. METHODS HIV-1 serodiscordant heterosexual couples, in which the HIV-1 infected partner was HSV-2 seropositive, had a CD4 count >or=250 cells/mcL and was not on antiretroviral therapy, were enrolled at 14 sites in East and Southern Africa. Demographic, behavioral, clinical and laboratory characteristics were assessed. RESULTS Of the 3408 HIV-1 serodiscordant couples enrolled, 67% of the HIV-1 infected partners were women. Couples had cohabitated for a median of 5 years (range 2-9) with 28% reporting unprotected sex in the month prior to enrollment. Among HIV-1 susceptible participants, 86% of women and 59% of men were HSV-2 seropositive. Other laboratory-diagnosed sexually transmitted infections were uncommon (<5%), except for Trichomonas vaginalis in 14% of HIV-1 infected women. Median baseline CD4 count for HIV-1 infected participants was 462cells/mcL and median HIV-1 plasma RNA was 4.2 log(10) copies/mL. After adjusting for age and African region, correlates of HIV-1 RNA level included male gender (+0.24 log(10) copies/mL; p<0.001) and CD4 count (-0.25 and -0.55 log(10) copies/mL for CD4 350-499 and >500 relative to <350, respectively, p<0.001). CONCLUSIONS The Partners Study successfully enrolled a cohort of 3408 heterosexual HIV-1 serodiscordant couples in Africa at high risk for HIV-1 transmission. Follow-up of this cohort will evaluate the efficacy of acyclovir for HSV-2 suppression in preventing HIV-1 transmission and provide insights into biological and behavioral factors determining heterosexual HIV-1 transmission. TRIAL REGISTRATION ClinicalTrials.gov NCT00194519.
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Affiliation(s)
- Jairam R. Lingappa
- Department of Global Health, 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
| | - Erin Kahle
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
| | - Nelly Mugo
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Obstetrics & Gynecology, University of Nairobi & Kenyatta National Hospital, Nairobi, Kenya
| | - Andrew Mujugira
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
| | - Amalia Magaret
- Department of Laboratory Medicine, University of Washington, Seattle, Washington, United States of America
- Vaccine and Infectious Disease Institute, Fred Hutchinson Cancer Institute, Seattle, Washington, United States of America
| | - Jared Baeten
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
| | - Elizabeth A. Bukusi
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Obstetrics & Gynecology, University of Nairobi & Kenyatta National Hospital, Nairobi, Kenya
- Center for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Craig R. Cohen
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Francisco, San Francisco, California, United States of America
| | - Elly Katabira
- Infectious Disease Institute, Makerere University, Kampala, Uganda
| | - Allan Ronald
- University of Manitoba, Winnipeg, Manitoba, Canada
| | - James Kiarie
- Department of Obstetrics & Gynecology, University of Nairobi & Kenyatta National Hospital, Nairobi, Kenya
| | - Carey Farquhar
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - Grace John Stewart
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
| | | | - M. Essex
- Department of Immunology & Infectious Diseases, Harvard School of Public Health, Harvard University, Boston, Massachusetts, United States of America
| | - Edwin Were
- Department of Reproductive Health, Moi University, Eldoret, Kenya
| | - Kenneth Fife
- Department of Medicine, Indiana University, Indianapolis, Indiana, United States of America
| | - Guy deBruyn
- Perinatal HIV Research Unit, University of Witwatersrand, Johannesburg, Republic of South Africa
| | - Glenda Gray
- Perinatal HIV Research Unit, University of Witwatersrand, Johannesburg, Republic of South Africa
| | - James McIntyre
- Perinatal HIV Research Unit, University of Witwatersrand, Johannesburg, Republic of South Africa
| | | | - Saidi Kapiga
- Kilimanjaro Christian Medical Centre, Moshi, Tanzania
- Department of Epidemiology & Population Health, London School of Hygiene and Tropical Medicine, London, England
| | - David Coetzee
- Infectious Disease Epidemiology Unit, University of Cape Town, Cape Town, Republic of South Africa
| | - Susan Allen
- Rwanda-Zambia HIV Research Group (RZHRG) and Emory University, Rollins School of Public Health, Atlanta, Georgia, United States of America
| | | | | | - Etienne Karita
- Rwanda-Zambia HIV Research Group (RZHRG), Kigali, Rwanda
| | | | - Sinead Delany
- Reproductive Health & HIV Research Unit, University of Witwatersrand, Johannesburg, Republic of South Africa
| | - Helen Rees
- Reproductive Health & HIV Research Unit, University of Witwatersrand, Johannesburg, Republic of South Africa
| | | | - Robert W. Coombs
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
- Department of Laboratory Medicine, University of Washington, Seattle, Washington, United States of America
| | - Rhoda Morrow
- Department of Laboratory Medicine, University of Washington, Seattle, Washington, United States of America
| | - William Whittington
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
| | - Lawrence Corey
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
- Department of Laboratory Medicine, University of Washington, Seattle, Washington, United States of America
- Vaccine and Infectious Disease Institute, Fred Hutchinson Cancer Institute, Seattle, Washington, United States of America
| | - Anna Wald
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
- Department of Laboratory Medicine, University of Washington, Seattle, Washington, United States of America
- Vaccine and Infectious Disease Institute, Fred Hutchinson Cancer Institute, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - Connie Celum
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
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Lingappa JR, Lambdin B, Bukusi EA, Ngure K, Kavuma L, Inambao M, Kanweka W, Allen S, Kiarie JN, Makhema J, Were E, Manongi R, Coetzee D, de Bruyn G, Delany-Moretlwe S, Magaret A, Mugo N, Mujugira A, Ndase P, Celum C. Regional differences in prevalence of HIV-1 discordance in Africa and enrollment of HIV-1 discordant couples into an HIV-1 prevention trial. PLoS One 2008; 3:e1411. [PMID: 18183292 PMCID: PMC2156103 DOI: 10.1371/journal.pone.0001411] [Citation(s) in RCA: 116] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2007] [Accepted: 11/12/2007] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Most HIV-1 transmission in Africa occurs among HIV-1-discordant couples (one partner HIV-1 infected and one uninfected) who are unaware of their discordant HIV-1 serostatus. Given the high HIV-1 incidence among HIV-1 discordant couples and to assess efficacy of interventions for reducing HIV-1 transmission, HIV-1 discordant couples represent a critical target population for HIV-1 prevention interventions and prevention trials. Substantial regional differences exist in HIV-1 prevalence in Africa, but regional differences in HIV-1 discordance among African couples, has not previously been reported. METHODOLOGY/PRINCIPAL FINDINGS The Partners in Prevention HSV-2/HIV-1 Transmission Trial ("Partners HSV-2 Study"), the first large HIV-1 prevention trial in Africa involving HIV-1 discordant couples, completed enrollment in May 2007. Partners HSV-2 Study recruitment data from 12 sites from East and Southern Africa were used to assess HIV-1 discordance among couples accessing couples HIV-1 counseling and testing, and to correlate with enrollment of HIV-1 discordant couples. HIV-1 discordance at Partners HSV-2 Study sites ranged from 8-31% of couples tested from the community. Across all study sites and, among all couples with one HIV-1 infected partner, almost half (49%) of couples were HIV-1 discordant. Site-specific monthly enrollment of HIV-1 discordant couples into the clinical trial was not directly associated with prevalence of HIV-1 discordance, but was modestly correlated with national HIV-1 counseling and testing rates and access to palliative care/basic health care (r = 0.74, p = 0.09). CONCLUSIONS/SIGNIFICANCE HIV-1 discordant couples are a critical target for HIV-1 prevention in Africa. In addition to community prevalence of HIV-1 discordance, national infrastructure for HIV-1 testing and healthcare delivery and effective community outreach strategies impact recruitment of HIV-1 discordant couples into HIV-1 prevention trials.
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Affiliation(s)
- Jairam R Lingappa
- University of Washington, Department of Medicine, Seattle, Washington, USA.
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