Ruben Bermudez stands in front of a sign that says in Spanish, "To love yourself is to protect yourself." He has struggled to remain eligible for AIDS drug assistance programs since he went on treatment four years ago. Jessica Camille Aguirre/NPR hide caption

itoggle caption Jessica Camille Aguirre/NPR

Health care workers in South Africa speak to residents during a door-to-door AIDS awareness campaign, part of a series of prevention efforts that has helped lower the country's HIV infection rate. Mujahid Safodien /Reuters /Landov hide caption

itoggle caption Mujahid Safodien /Reuters /Landov

HIV patient Darnell Hollie, 47, talks to her doctor Monica Gandhi (right) at San Francisco General Hospital. Her path from drug addict to model patient was "a lot of work, but if you want it, it's there for you," Hollie says. Richard Knox/NPR hide caption

itoggle caption Richard Knox/NPR