Cecile Viboud is a senior research scientist in the Division of International Epidemiology and Population Studies of the Fogarty International Center, National Institutes of Health, USA. Her research focuses on the epidemiology and transmission dynamics of acute viral infections, at the interface of public health and computational modeling. Her work has concentrated on modeling the epidemiology, excess mortality, and transmission dynamics of respiratory viruses, including seasonal and pandemic influenza, and COVID-19. She has recently become interested in the potential of Big Data to strengthen infectious disease surveillance, disease forecasts, and the population-level impact of vaccination programs.