P-723. High Prevalence of Chemsex in PrEP Users in Buenos Aires, Argentina
Abstract
Abstract Background The practice of chemsex refers to the intentional use of psychoactive substances to enhance sexual activity or pleasure. Pre-exposure Prophylaxis (PrEP) for HIV consists in the use of antiretroviral drugs to reduce the risk of infection. A history of having practised chemsex has been associated with a higher frequency of sexually transmitted infections (STIs) diagnosis among PrEP users, probably due to the likelihood of engaging in high-risk behaviors. In Argentina, there is limited information regarding this issue. This research aims to characterize the practice of chemsex and STIs prevalence in PrEP users in four hospitals in Buenos Aires, Argentina. Methods This is a descriptive, cross-sectional study. The medical records and a self-administered ad-hoc questionnaire were used to obtain the information. Results From February to October 2024, 165 PrEP users were included in the study. The prevalence of chemsex, during the last year, was 32%. The drugs used, in order of frequency, were: MDMA (ecstasy), 21 %; cocaine, 14 %; gamma-hydroxybutyrate (GHB), 12 %; ketamine, 10 %; methamphetamine, 6 %; mephedrone, 2 %; and gamma-butyrolactone (GBL), 1 %. Sixty percent reported the use of 2 or more drugs simultaneously. The sexualized use of marijuana, poppers, sildenafil/tadalafil and/or alcohol was also investigated, with a prevalence of 73%, during the same period. We found an association between the practice of chemsex and a higher number of sexual partners (p…
How strong is the evidence?
Evidence Hub reads this as a cross-sectional. Its evidence level is 4 of 5 (Low · observational). Observational designs can show an association but not prove cause.
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