Dr. Klein is an assistant professor in the Department of Emergency Medicine. He is also a fellow at the Center for Disease Dynamics, Economics and Policy in Washington, D.C. Upon finishing his Ph.D. in ecology and evolutionary biology from Princeton University, Dr. Klein joined the Johns Hopkins faculty in 2012.

Dr. Klein’s research focuses on the role of individuals in the spread of infectious diseases. This area of research sits at the nexus of economics and epidemiology, and is premised on the idea of incorporating incentives for healthy behavior and attendant behavioral responses into an epidemiological context to better understand how diseases are transmitted. This nascent field of economic epidemiology is based on the idea of improving policy responses to epidemic diseases by giving policymakers and health care providers clear tools for thinking about how certain actions can influence the spread of disease transmission. The primary disease focus of Dr. Klein’s research is antimicrobial resistance and influenza.

Dr. Klein has authored numerous publications on the evolution and spread of antimicrobial drug resistance, with particular reference to the emergence of antibiotic and antimalarial drug resistance. Dr. Klein is actively involved in research efforts supported by the Hartwell Foundation that focus on using computational tools for predicting antigenic change in influenza viruses from season to season. Dr. Klein is also actively involved in work supported by the Bill and Melinda Gates Foundation to support ResistanceMap, a global survey of antibiotic resistance rates across the globe.