C. Jessica E. Metcalf is an Associate Professor in Ecology, Evolution & Public Affairs at Princeton University. Jessica Metcalf is a demographer with broad interests in evolutionary ecology, infectious disease dynamics and public policy. She completed her PhD at Imperial College and, after several postdoctoral positions, began her career at Princeton in 2014 as a joint appointment between the Department of Ecology and Evolutionary Biology and the School of Public and International Affairs. She works on an array of health questions, with a particular focus on vaccination policy, combining public health surveillance data with novel data sources including mobile phone call data records and mechanistic models of infectious disease spread to characterise the intersection between human demography, behaviour and infectious disease.