HIV seroprevalence, incidence, and viral suppression among Ugandan males with bar or sex worker partners: a population-based study
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Background
Female bar or sex workers (FBSWs) in Eastern Africa experience a high burden of HIV. However, there is limited population-level data on HIV seroprevalence, incidence, and viral suppression among their male partners.
Methods
Men who had sex with FBSWs in the past year were identified through longitudinal population-based HIV surveillance in southern Uganda between 2013 and 2020. Surveillance was conducted over four surveys in four Lake Victoria fishing communities (HIV seroprevalence∼40%) and 37 inland agricultural and trading communities (∼12%). Primary outcomes included laboratory-confirmed HIV seropositivity, incident infection, and viral suppression (<200 copies/mL). Prevalence and incidence rate ratios (PR, IRR) were estimated using univariable and multivariable Poisson regressions with 95% confidence intervals (95%CIs).
Findings
17,438 male participants contributed 35,273 visits, with 2,420 (13.9%) reporting FBSW partners at ≥1 study visit. Men with FBSW partners tended to be older, have less education and lower incomes, and be previously married compared to those without. HIV seroprevalence was significantly higher among men with FBSW partners (vs. without FBSW partners) in both inland (21.0%vs.7.5%; PR=2.79,95%CI=2.41-3.23) and fishing communities (38.6%vs.23.0%; PR=1.67,95%CI=1.53-1.84). Overall, 154 HIV incident events occurred over 27,396 years of participant follow-up. HIV incidence was also higher among men with FBSW partners than those without (1.93vs.0.44/100 person-years; IRR=4.37,95%CI=3.04-6.16). Among men with HIV, viral suppression was similar among those with and without FBSW partners. However, the population prevalence of HIV viremia was 1.6 times higher (95%CI=1.41-1.84) among men with FBSW partners due to a higher background seroprevalence of HIV.
Interpretation
Men in Uganda frequently report sex with FBSWs, which is associated with a significantly higher risk of HIV acquisition. Tailored HIV prevention strategies, including the promotion and uptake of PrEP, are essential to reduce the HIV burden in this population.
Funding
National Institute of Allergy and Infectious Diseases, National Institutes of Health
