Arusha, Tanzania - 07.03.16 - Scolla Justin Mgalla speaks during a peer education session at Mount Meru Regional Hospital in Arusha, Tanzania on March 7, 2016. HIV positive, Mgalla works as a lay counselor and expert patient. Photo by Daniel Hayduk haydukEGPAF-march7-015 Adolescent HIV services: A guide for health care workers (Tanzania) › haydukEGPAF-march7-015