Illicit substance use, sexual risk, and HIV-positive gay and bisexual men: differences by serostatus of casual partners

Abstract

Substance use before or during sex was not associated with risk with HIV-negative partners, suggesting that disclosure by HIV-negative sexual partners of HIV-positive men may be important. Being a user of particular party drugs was associated with recent risk with HIV-negative partners. With partners whose serostatus was unknown, the use of certain party drugs and using substances in the context of sex was associated with risk, possibly as a result of reliance on assumptions of seroconcordance. This same pattern was seen for HIV-positive casual partners. These data have intervention implications for both HIV-positive and HIV-negative men.