BOOKS
The Guts of the Matter: A Global History of Human Waste and Infectious Intestinal Disease (Cambridge University Press, 2020)
The Long Struggle Against Malaria in Tropical Africa (Cambridge University Press, 2014)
Global Health In Africa: Historical Perspectives on Disease Control (Ohio University Press, 2013), co-edited with T. Giles-Vernick
Humanity’s Burden: A Global History of Malaria (Cambridge University Press, 2009)
Tropical Pioneers: Human Agency and Ecological Change in the Highlands of Sri Lanka, 1800-1900 (Ohio University Press, 2002)
Desert Frontier: Ecological and Economic Change along the Western Sahel, 1600-1850 (University of Wisconsin Press, 1995).