Objective: Evaluate changes in condomless anal sex at last sex among men who have sex
with men (MSM) and assess if these changes are associated with the adoption of …

Objective: We derived an estimate of male condom effectiveness during anal sex among
men who have sex with men (MSM) because the most widely used estimate of condom …

Background Although efficacy is unknown, many men who have sex with men (MSM)
attempt to reduce HIV risk by adapting condom use, partner selection, or sexual position to …

We examined racial/ethnic differences in reported seroadaptive and serodisclosure
behaviors among the partnerships of MSM recruited for a cross-sectional survey using time …

Seroadaptive behaviors have been widely described as preventive strategies among men
who have sex with men (MSM) and other populations worldwide. However, causal links …

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 …

Background: Serosorting among men who have sex with men (MSM) is common, but recent
data to describe trends in serosorting are limited. How serosorting affects population-level …

Condom failure (slippage or breakage) has been shown to be associated with HIV
seroconversion among men who have sex with men (MSM), but predictors of failure have …

Abstract “Seroadaptation” comprises sexual behaviors to reduce the risk of HIV acquisition
and transmission based on knowing one's own and one's sexual partners' serostatus. We …

Objectives To assess changes in seroadaptive behaviours among men who have sex with
men (MSM) in San Francisco over the past 4 years. Methods 461 MSM were recruited in …