The second large study to look at whether people with HIV become non-infectious if they are on antiretroviral therapy (ART) has found no cases where someone with a viral load under 200 copies/ml transmitted HIV, either by anal or vaginal sex. When asked what the study tells us about the chance of someone with an undetectable viral load  transmitting HIV, presenter Alison Rodger said: “Our best estimate is it’s zero.”

These results are interim results and full results will not be out till 2017. Till then we need to be cautious about what has been shown so far. Nonetheless, these results do add weight to the arguments that the risk of transmission for someone with a low viral load are very low, if not negligible.

The full article can be read here.