Seroprevalence, Knowledge and Behavioral Factors Associated with HIV Infection Among Men Who have Sex with Men (MSM) in Benin

Most of HIV infections among adults in sub-Saharan Africa have been acquired through unprotected sex, including with sex workers and through sex between men. Unprotected sex between men promotes the transmission of STIs and HIV in particular. Unprotected anal penetration is a high-risk route of transmission. The study will estimate HIV prevalence and describe the risk factors associated among MSM population. From January to April 2016, 414 participants were enrolled in the study by the "Respondent-Driven Sampling"; the variables measured were biological, behavioral and HIV knowledge factors. Univariate and multivariate analysis were conducted and the results were weighted. MSM are predominantly young: 50.4% (41.7- 59.2) are between 20 and 24 years old, the weighted HIV prevalence is 21.8% (95% CI: 13.5 - 30.7). More than half of participants 54.4% (43.9 - 64.8) did not have accurate knowledge of HIV. Condom use during the last anal sex is significantly associated with HIV AOR (adjusted odd ratios) 0.47 (95% CI: 0.36-0.62), p<0.0001) adjusted on potentially confounding factors. This is about those below 25 years AOR 0.7 (95%CI: 0.55-0.90, p<0.0005), the educational level AOR 22.18 (95% CI: 9.49-59.75, p<0.0001), living in couple, AOR: 2.01 (95% CI: 1.54-2.63) p<0.0001; frequency of condom use with lubricant, AOR: 1.3 (95% CI: 1.03-1.65, p<0.029). This study highlights a high HIV prevalence among the MSM population and therefore shows the need to develop specific high-impact prevention programs towards this key target group while promoting an environment of protection and respect for human right.