Per-partner condom effectiveness against HIV for men who have sex with men.

OBJECTIVE Few studies have examined condom effectiveness for HIV prevention among MSM. We estimated condom effectiveness per partner in four cohorts of MSM during 1993-2003 (JumpStart, Vaccine Preparedness Study, VAX004 and Project Explore). METHODS We used logistic regression to estimate the increase in odds of new HIV infection per HIV-positive partner… CONTINUE READING