Extrarelational sex among Mexican men and their partners' risk of HIV and other sexually transmitted diseases

Objectives, This study explored the risk of HIV and other sexually transmitted diseases (STDs) among married and cohabiting women in Mexico City, Mexico, derived from their partners' sexual behaviors. Methods. Results were derived from the first population-based household survey in Mexico that investigated male sexual behavior, Analyses were restricted to sexually active married or cohabiting men (n = 3990). Results. Fifteen percent of the men reported extrarelational sex during the past year, 9% reported condom use during last intercourse, and 80% perceived no HIV risk. Most secondary partners were coworkers, mistresses, or friends. Conclusions. Targeted HIV and STD prevention efforts appear necessary because a substantial number of women may be at risk.