Barton Haynes, director of the Duke Human Vaccine Institute and the Center for HIV/AIDS Vaccine Immunology (CHAVI), speaks during the XIX International AIDS Conference, Wednesday, July

 

              Barton Haynes, director of the Duke Human Vaccine Institute and the Center for HIV/AIDS Vaccine Immunology (CHAVI), speaks during the XIX International AIDS Conference, Wednesday, July
Barton Haynes, director of the Duke Human Vaccine Institute and the Center for HIV/AIDS Vaccine Immunology (CHAVI), speaks during the XIX International AIDS Conference, Wednesday, July 25, 2012, in Washington. (AP Photo/Carolyn Kaster)