is the founder and CEO of the International AIDS Vaccine Initiative, a global not-for-profit working in 24 countries to develop preventive HIV vaccines. He is also a medical doctor specializing in infectious-disease epidemiology and international health. Berkley previously held positions at the Rockefeller Foundation, the US Centers for Disease Control, and the Carter Center. He serves on advisory boards for the Acumen Fund, the New York Academy of Sciences, Gilead Sciences, and VaxInnate, and is a member of the Council on Foreign Relations. Berkley was named one of the “100 Most Influential People in the World” by TIME magazine in 2009. He is an adjunct professor at Brown, Columbia, and New York University.