A new study on the risks of HIV transmission between partners — where one is HIV negative and the other is HIV positive but has the virus suppressed with anti-retroviral therapy — is providing glimpses of good news.
A team of researchers from institutions including University College London, the University of Copenhagen and the University of Liverpool found that none of the couples in the study — all of whom had one partner with HIV who was on anti-retroviral therapy and thus had a suppressed viral load — experienced HIV transmission from the HIV-positive partner to the HIV-negative partner over a two-year follow-up period.
(However, this is not the same thing as saying that there is 0 percent chance of being infected with HIV if your partner has a suppressed viral load with anti-retroviral therapy.)
While there were some instances of HIV-negative partners being infected with HIV over the follow-up period, the researchers noted that “no phylogenetically linked transmissions occurred, giving a rate of within-couple HIV transmission during eligible couple-years of zero,” they wrote in the study abstract. In other words, those infected were exposed to the virus from someone else.
(via The Medical Blog)