Risky sexual behavior and HIV seroprevalence among MSM in Campinas, SP, Brazil
Background: A cross-sectional study was conducted in 2006 in Campinas, Brazil to obtain population estimates of sexual risk behaviors and HIV prevalence among MSM.
Methods: MSM (n=658) were recruited through respondent-driven sampling (RDS), and audio-assisted computer self-interview was used to obtain information on sexual behaviors. Estimates were calculated using RDS Analysis Tool with 95% confidence intervals (CI).
Results: In the previous two months, 46% reported 2-5 sex partners (CI: 42-52%), and 18% reported ³6 partners (CI: 14-21%): 30% (CI: 26-35%) reported unprotected receptive anal intercourse (URAI) with at least one partner and 7% (CI: 4-10%) with ³2 partners. Despite low rates of condom use, 50% (CI: 46-56%) of MSM perceived themselves to be at low or no risk for HIV and 34% (CI: 28-41%) of those reported having had at least one episode of URAI in the past two months. Sixteen percent (CI: 11-22%) of MSM had sex with both men and women in the same period. Among those reporting vaginal or anal sex with female partners, 75% (CI: 37-91%) reported unprotected anal or vaginal intercourse at least once in the past two months. Seroprevalence of HIV was 7% (CI: 5-11%) among MSM, and 4% (CI: 1-9%) among those aged 14-19.
Conclusion: HIV prevalence, especially for teenage MSM was strikingly high given that the median age of first sexual contact in Brazil is 13 years old. These findings indicate the importance of the MSM population in the HIV epidemic in Brazil, and provided the government with data to make MSM a key target group in the fight against HIV, as highlighted by the high priority given to MSM during the official 2007 AIDS Day prevention campaign.
-Abstract available at link below-