My broad research interests involve developing and applying quantitative approaches to study the ecology and evolution of infectious diseases. I am particularly interested in the beginning stages of pathogen invasion that immediately follow spillover from a reservoir species or reintroduction from a separate population.
My current research questions include: (1) How do traits of the host population, such as population structure and individual variability, affect the initial spread and ultimate success of a pathogen? (2) What are the expected dynamics of competition between a human pathogen and a cross-protective zoonotic pathogen that spills over into the human population? In particular, what will be the system's behavior both during and following a vaccination campaign? (3) Can we use mathematical models to maximze the amount of information we can infer from surveillance data of a subcritical zoonotic pathogen? and (4) Can immunity from childhood influenza exposure help explain the puzzling age distribution of severe cases of avian influenzas H5N1 and H7N9?