Stephen S. Morse (born November 22, 1951) is an American epidemiologist, influenza researcher and specialist on emerging infectious diseases, who has served as an adviser on the epidemiology of infectious diseases and on improving disease early warning systems to numerous government and international organizations.
As of 2016, he is Professor of Epidemiology at the Mailman School of Public Health of Columbia University.
Morse was formerly an assistant professor of virology at The Rockefeller University in New York and remains an adjunct faculty member there.
He was the founding chair of a nonprofit organization called ProMED (Program to Monitor Emerging Diseases) and was one of the originators of ProMED-mail, an international network inaugurated by it in 1994 for disease outbreak reporting and monitoring using the Internet.
Morse returned to Columbia University in 2000, where he is professor of epidemiology, curriculum coordinator for the Center for Public Health Preparedness and co-director of the USAID PREDICT Project as well as director of the MPH Infectious Disease Epidemiology Certificate.