To examine the prevalence and determinants of PrEP surfing among men who have sex with men (MSM) without HIV participating in the Amsterdam Cohort Studies.
Approach:
Study Design: A prospective study analyzing 2,187 visits from 636 participants between October 2021 and December 2023.
Definition of PrEP Surfing: PrEP surfing was defined as using a partner’s PrEP use as a perceived HIV prevention strategy during condomless anal sex.
Data Analysis: Logistic regression was used to assess determinants of recent PrEP surfing, while linear regression assessed intention to practice it.
Key Findings:
PrEP surfing was reported during 25% of study visits, with 42% of participants reporting it at least once.
Factors associated with PrEP surfing included number of sex partners, recent PrEP use, recent STIs, and perceived HIV risk.
Participants aged 45 years and older had lower odds of PrEP surfing compared to younger participants.
High intention to practice PrEP surfing was reported in 27% of visits, associated with similar factors as recent surfing.
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