Background: The Monkeypox (Mpox) outbreak disproportionately affected sexually active gay, bisexual, and other men who have sex with men. To understand community-level changes in sexual behavior, we surveyed individuals in a semi-urban area in Southern California.
Methods: Participants were recruited between October 2022 to April 2023, using palm cards, and geolocation-focused online advertisements on social media and dating apps. Eligible participants were male, ≥18 years, reported sex with men, residents of San Bernardino or Riverside counties, California, Human Immunodeficiency Virus (HIV)-negative, currently not taking pre-exposure prophylaxis (PrEP). Descriptive analyses were performed. Chi-square, Fisher's exact, and Student's T-tests examined the association between group sex behaviors and demographics.
Results: We enrolled 91 gay, bisexual, and other men who have sex with men with a median age of 35 years (range 18-70 years). Nearly half reported having participated in group sex in the past year. Overall, 48.9% of group sex participants reported changing their sexual behaviors to prevent Mpox transmission, with limiting the number of sex partners being the most reported prevention strategy (47.6%). To prevent Mpox infection, participants that engage in group sex reported limiting the number of sex partners (34.4%), using condoms for anal sex (16.7%), avoiding crowded social venues (14.3%), and asking partners about Mpox symptoms before sex (9.5%).
Conclusion: Survey participants reported modest sexual behavior changes in response to the Mpox outbreak. Group sex may increase the risk for Mpox, HIV, and other sexually transmitted infections; therefore, public health messages should include specific discussion of safer group sex practices in sexual health promotion.
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