The world just experienced a devastating pandemic, yet in the context of historical pandemics, COVID-19 was a relatively minor event in the history of disease. What do we know about the history of pandemics, including before written records, and what can we learn from this history? With us to answer these and other questions about the origins of epidemics and pandemics is Leslie Reperant. Leslie graduated with a doctorate of veterinary medicine at the National Veterinary School of Lyon, France in 2004 and obtained a PhD at Princeton University in the Department of Ecology and Evolutionary Biology in 2010. Leslie's doctoral and post-doctoral studies focused on the interplay between the pathogenesis and evolution of influenza viruses, and on factors driving pathogen emergence and spread. Leslie is the author of Fatal Jump: Tracking the Origins of Pandemics, published in 2023 by Johns Hopkins University Press.