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David Waltner-Toews is a Canadian veterinary epidemiologist. Specializing in approaches to integrating the health of humans, other animals, and ecosystems. He has published over 100 peer-reviewed papers and several internationally recognied textbooks, as well as, fiction, poetry and science. These books include Food, Sex and Salmonella (2008), The Origin of Feces (2013), Eat the Beetles! (2017) and On Pandemics (2020). He lives in Ontario.