Understanding the epidemiology of HIV is critical to conducting prevention research, vaccine development, and assuring HIV prevention interventions are delivered as effectively as possible. IAVI and its partners have conducted the following observational epidemiology studies related to HIV prevention and vaccine research and development.

 
Study NameStudy DetailsStatusCountriesPartners
Protocol C Prospective cohort of volunteers with incident HIV infection. 613 volunteers enrolled from nine research centers for long term follow up; 406 suspected transmitting partners for a single visit. Enrollment closed in 2011, follow up mostly closed in 2017; follow up ongoing in small subset of volunteers Kenya
Rwanda
South Africa
Uganda
Zambia
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Protocol G Prevalence/cross-sectional. Single visit of adults with HIV infection for 3+ years with no significant health issues. Those whose screened serum showed neutralizing activity were asked to come back for further testing and follow up. Approximately 2,100 enrolled. Study closed Australia
India
Ivory Coast
Kenya
Nigeria
Rwanda
South Africa
Thailand
Uganda
United Kingdom
United States
Zambia
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Protocol N and Acute HIV Infection Studies Prospective cohort studies of volunteers identified prior to, or during antibody seroconversion, using real-time PCR on the GeneXpert platform, or overnight traditional PCR. Dozens of volunteers identified during this acute phase of HIV infection have been offered treatment, and are followed over time. Studies in Zambia, Kenya and South Africa are active. Studies in Rwanda are complete. Studies in Uganda are in development. Kenya
Rwanda
South Africa
Uganda
Zambia
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Protocol B and HIV Incidence Studies  Incidence/prospective cohorts in higher-risk populations potentially suitable for efficacy trial participation. This family of studies includes nearly three dozen cohorts that have enrolled over 20,000 volunteers including female sex workers, men who have sex with men, at-risk women, married couples, and fishing community members. Multiple studies conducted. Currently five cohorts ongoing Kenya
Rwanda
South Africa
Uganda
Zambia
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Protocol D Cross-sectional study to characterize laboratory reference intervals in health African adults, with a single follow up visit to assess the effect of season in selected sites. 2,105 enrolled with 903 volunteers in the seasonal study and 200 in another study to assess the effect of splenomegaly. Study completed Kenya
Rwanda
Uganda
Zambia
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Protocol H Prospective cohort of volunteers with incident HIV infection who had previously participated in HIV vaccine trials with the same schedule of procedures as Protocol C. Enrollment open, study follow up ongoing Kenya
Rwanda
Uganda
Zambia
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Protocol I Convenience sample to characterize gut mucosal immune function. Enrollment open, follow up ongoing Kenya Show Partners
Protocol O Convenience sample to obtain discarded surgical tissue from patients undergoing surgical procedures. Ongoing Kenya Show Partners
LTFU Clinical trial volunteer follow-up. Enrollment open as trials conclude, follow up ongoing Kenya
Rwanda
South Africa
Uganda
Zambia
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Protocol L Assay characterization and immune responses among volunteers enrolled for sample provision. Over a dozen small studies have been initiated, completed or are in follow up Kenya
Rwanda
Uganda
United Kingdom
Zambia
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Protocol A Prevalence/cross-sectional. 6,532 volunteers enrolled to estimate HIV prevalence at four sites. Study completed Kenya
Uganda
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Protocol E Cross-sectional, 40 volunteers enrolled. Study completed Kenya
Rwanda
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Protocol J Prospective cohort, 45 volunteers enrolled at two research centers in Kenya. Study completed Kenya Show Partners  
Protocol M Prospective mucosal sampling sub-study attached to IAVI-sponsored clinical trials, 89 volunteers enrolled. Study completed Kenya Show Partners