Gregg Gonsalves is an expert in policy modeling on infectious disease and substance use, as well as the intersection of public policy and health equity. His research focuses on the use of quantitative models for improving the response to epidemic diseases. For more than 30 years, he worked on HIV/AIDS and other global health issues with several organizations, including the AIDS Coalition to Unleash Power, the Treatment Action Group, Gay Men’s Health Crisis, and the AIDS and Rights Alliance for Southern Africa. He was also a fellow at the Open Society Foundations and in the Department of Global Health and Social Medicine at Harvard Medical School from 2011-2012. He is a 2011 graduate of Yale College and received his PhD from Yale Graduate School of Arts and Sciences/School of Public Health in 2017. He is a 2018 MacArthur Fellow.