Gay HIV transmission with treatment is 'zero risk', study confirms [View all]

A study of nearly 1,000 gay male couples in The Lancet found no cases of HIV transmission over eight years.

This was due to treatment reducing the virus to very low levels in the body. "Undetectable equals untransmittable" should be basic HIV knowledge for everyone, experts said.

The European study followed 972 gay male couples - where one was living with HIV and taking antiretroviral therapy (ART) and the other was HIV negative - over eight years, from 2010-2017.

There were no cases of HIV being passed within the couples over that time.

https://www.bbc.com/news/health-48124007