Helene D. Gayle, M.D., M.P.H., is CEO of McKinsey Social Initiative, a nonprofit organization that brings together stakeholders to address complex global and social challenges. Gayle was born and raised in Buffalo, NY. She earned a B.A. in psychology at Barnard College, an M.D. at the University of Pennsylvania and an M.P.H. at Johns Hopkins University. She is board certified in pediatrics, completing a residency in pediatric medicine at Children’s National Medical Center in Washington, D.C. Gayle is an expert on health, global development and humanitarian issues; with 20 years of service at the Centers for Disease Control (CDC), she was appointed as the first director of the National Center for HIV, STD and TB Prevention, and achieved the rank of Rear Admiral and Assistant Surgeon General in the U.S. Public Health Service. Gayle also served as the AIDS coordinator and chief of the HIV/AIDS division for the U.S. Agency…