Microbicide Trials Network

MTN-015 is a long-term, observational study that seeks to understand the nature of HIV progression and treatment response in HIV-positive women who had been using a topical microbicide or oral antiretrovirals as pre-exposure prophylaxis when they were infected. The study will enroll women who acquire HIV while participating in an MTN trial, regardless of what study group they had been assigned to in that trial.