, Volume 12, Issue 6, pp 852-859

Determinants of High-Risk Sexual Behavior during Post-Exposure Prophylaxis to Prevent HIV Infection

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Abstract

Men who have sex with men (MSM) receiving non-occupational post-exposure prophylaxis (NPEP) to prevent HIV transmission completed interview-assisted questionnaires regarding high-risk behavior in the 6 months prior to NPEP and during the 28-day NPEP period. 21% of participants reported unprotected sex during NPEP, and 11% reported unprotected sex with HIV-positive or HIV status unknown partners. In univariate analyses, unprotected sex during NPEP was associated with prevention fatigue, depression, loss of loved ones to HIV, and a history of engagement with HIV/AIDS service organizations, e.g., receiving services from an HIV-related agency, donating money to HIV-related causes, and reading HIV-related magazines. Logistic regression analyses revealed that the strongest predictor of risk-taking during NPEP was HIV engagement. These data underscore the importance of combining chemoprophylaxis with behavioral interventions that support risk-reduction. Such interventions should not assume that those most engaged with HIV/AIDS service organizations are less likely to engage in risk behavior.