Leo Perelis, a member of the HPTN 083 Community Working Group, is a community educator at the Hospital Ramos Mejía in Buenos Aires, Argentina. Since 1992 he has worked with people living with HIV and supported multiple HPTN, HVTN and IMPAACT studies, as well as the Dolutegravir and Darunavir Evaluation in Adults Failing Therapy (D2EFT) trial.