Gay men who engage in group sex are at increased risk of HIV infection and onward transmission

AIDS Behav. 2009 Aug;13(4):724-30. doi: 10.1007/s10461-008-9460-7. Epub 2008 Sep 26.


Among 746 participants in the Three or More Study (TOMS) of gay men who engaged in group sex in the previous 6 months, 22.4% reported unprotected anal intercourse (UAI) with any partners they did not know to be the same HIV serostatus as themselves. Not knowing oneself to be HIV-negative, not having a clear intention to use condoms, and more frequent group sex were independently associated with UAI. This study shows that gay men who engage in group sex represent an important priority for targeted HIV prevention activities and research.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Analysis of Variance
  • Australia
  • Condoms
  • HIV Infections / prevention & control
  • HIV Infections / transmission*
  • Homosexuality, Male / psychology
  • Homosexuality, Male / statistics & numerical data*
  • Humans
  • Internet
  • Male
  • Regression Analysis
  • Risk Factors
  • Risk-Taking*
  • Sexual Behavior / psychology
  • Sexual Behavior / statistics & numerical data*
  • Sexual Partners
  • Surveys and Questionnaires
  • Unsafe Sex