Prevention Matters

Dr. Helene Gayle, an AIDS expert who serves as president and chief executive of the charity CARE USA, has been named to chair the Presidential Advisory Council on HIV/AIDS.Gayle is a former head of AIDS research at the U.S. Centers for Disease Control and Prevention who also headed AIDS efforts at the Bill & Melinda Gates Foundation before becoming the head of CARE USA. She will advise President Barack Obama on fighting the virus, which has infected an estimated 1 million Americans and 33 million people globally.