What does the science say about U=U?
Three international studies showed no HIV transmissions among mixed-status couples when the partner with HIV was undetectable for 6 months or longer. This included more than 75,000 acts of reported condomless sex among mixed-status heterosexual and gay male couples. The studies were HPTN 052, PARTNER and Opposites Attract. To date worldwide there are no verified reports of someone getting HIV from a partner who is undetectable.