David Barnes is an Associate Professor and Director of the Health and Societies Major in the Department of History and Sociology of Science in the School of Arts and Sciences, where he teaches the history of medicine and public health. Prior to joining Penn, Barnes taught for a year at the Institute for Liberal Arts at Emory University and for seven years in the History of Science Department at Harvard University. His current research is concentrated on the history of infectious disease, epidemiology, and public health; nineteenth-century urban European social and cultural history; and the politics of international disease control programs. He has a forthcoming book on the history of the Lazaretto Quarantine Station, located outside of Philadelphia.