A promising new study of HIV-positive men and women on suppressive antiretroviral therapy suggests their risk of passing the virus to a partner through unprotected sex is “extremely low" In fact, out of 1,166 gay and straight couples, where one partner had HIV and the other did not there were zero cases of within-couple HIV transmission in almost 900 of them after 1.3 years according to the report published in JAMA’s HIV/AIDS-themed issue on Tuesday
