We are fascinated by the interactions between parasites and their hosts – which result in dramatic disease outbreaks, parasites jumping between host species, selection for sexual reproduction in the host, and parasite escape from the effects of drug or vaccine treatments. We take a population-centered approach, meaning we seek to explain population-level patterns in host and parasite organisms. Thematically, we're at the intersection of ecology and evolutionary biology. Most of our work is empirically motivated, and we use a range of techniques including simulation modeling, spatial statistics and machine learning to link theory and data.