Alison Bashford is Professor of Modern History at the University of Sydney. She has published widely on the modern history of science and medicine, including Purity and Pollution and Imperial Hygiene, and has co-edited Contagion, Isolation, and Medicine at the Border.
Philippa Levine is the Mary Helen Thompson Centennial Professor in the Humanities at the University of Texas at Austin. Her books include Prostitution, Race and Politics: Policing Venereal Disease in the British Empire, and The British Empire, Sunrise to Sunset.