Yesterday the results of HIV Prevention Trials Network (HPTN) 052, a clinical trial funded by the National Institutes for Health, offered definitive proof of what we have long suspected---that treating HIV infected persons substantially reduces the risk of transmitting HIV to uninfected persons.
This is FANTASTIC news and offers very convincing evidence that, at least for heterosexual discordant couples (the study was not able to enroll significant numbers of gay men), if the infected person is on ART, the uninfected partner is protected. And more broadly, it offers significant evidence that treatment is indeed highly effective in preventing transmission of HIV. This can reasonably be described as a “game changer” with respect to how we think about HIV prevention, care, and treatment. We used to talk about “treatment as prevention,” but now we can say “treatment IS prevention.”
Read the UNAIDS report here.