Marcia Castro is Andelot Professor of Demography, Chair of the Department of Global Health and Population at the Harvard TH Chan School of Public Health, and Chair of the Brazil Studies Program of the David Rockefeller Center for Latin American Studies (DRCLAS). Her research focuses on the development and use of multidisciplinary approaches to identify the determinants of infectious disease transmission in different ecological settings to inform control policies. She has more than 15 years of collaboration with Brazilian researchers, Health Secretariats, and the Ministry of Health particularly related to infectious diseases. She made important contributions during recent public health emergencies (the Zika virus epidemic and the COVD-19 pandemic). Castro has projects on malaria, COVID-19, arboviruses, infant/child mortality and development, and climate change in the Brazilian Amazon. Specifically, on COVID-19 she has been assessing the spatiotemporal pattern of COVID-19 spread in Brazil, mortality, and fertility changes due to the pandemic, risk factors for mortality, and vaccine effectiveness. She serves on several advisory boards in Brazil, including the Institute for the Studies of Health Policies (IEPS), the Science Center for Early Childhood (NCPI), and Instituto Todos Pela Saúde (ITpS). She earned a PhD in Demography from Princeton University.