But that's treatment. Prevention efforts are a different story, and if the world doesn't figure out how to prevent new cases of HIV, stubbornly holding steady at about two million infections a year since 2005, according to a 2016 report in Lancet HIV, a resurgence in the epidemic is possible. That gloomy warning comes from a report by a new Lancet Commission led by the International AIDS Society and published in the July 19 Lancet just days before the start of the 22nd International AIDS Conference on July 22 in Amsterdam.