Hasse, BarbaraBarbaraHasseLedergerber, BrunoBrunoLedergerberHirschel, BernardBernardHirschelVernazza, PietroPietroVernazzaGlass, Tracy RTracy RGlassJeannin, AndreAndreJeanninEvison, John MarcJohn MarcEvisonElzi, LuigiaLuigiaElziCavassini, MatthiasMatthiasCavassiniBernasconi, EnosEnosBernasconiNicca, DunjaDunjaNiccaWeber, RainerRainerWeberSwiss HIV Cohort, StudyStudySwiss HIV Cohort2024-10-102024-10-102010https://boris-portal.unibe.ch/handle/20.500.12422/73387Access to antiretroviral therapy may have changed condom use behavior. In January 2008, recommendations on condom use for human immunodeficiency virus (HIV)-positive persons were published in Switzerland, which allowed for unprotected sex under well-defined circumstances ("Swiss statement"). We studied the frequency, changes over time, and determinants of unprotected sex among HIV-positive persons.enarticle10.7892/boris.26962103420000028385020001610.1086/656809