Andrea is a Professor of Ecology & Evolutionary Biology and Co-Director of the Global Health Program at Princeton University, in New Jersey, USA. She earned her first degree summa cum laude in Biology and Sculpture from Mount Holyoke College and then a Ph.D. in Ecology & Evolutionary Biology from Cornell University. Andrea completed postdoctoral training and then held Leverhulme and BBSRC fellowships at the University of Edinburgh, Scotland, before moving to Princeton in 2011. Her research focuses on the causes and consequences of immunological heterogeneity in mammals. She studies rewilded mice, people, and a variety of wild animals. She is especially interested in why hosts vary so much in worm burden, even under similar exposure conditions, including how host genotype and environment interact to determine the establishment, growth and survival of nematodes within the gastrointestinal tract.