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Alex H. Kral

Director, Urban Health Program

Alex Kral, PhD, is an infectious disease epidemiologist with expertise in community-based research with urban poor populations. He is currently principal investigator and coinvestigator on several NIH-funded studies of substance use, infectious diseases, and health, spanning a diverse set of methodological areas including survey research, qualitative observational research, intervention development and testing, geospatial analyses, policy, and genetics. Dr. Kral has authored and coauthored over 80 articles in peer-reviewed journals, including The Lancet, New England Journal of Medicine, Journal of the American Medical Association, American Journal of Epidemiology, American Journal of Public Health, AIDS, Addiction, and Drug and Alcohol Dependence.


PhD, Epidemiology, School of Public Health, University of California at Berkeley; MS, Epidemiology, Harvard School of Public Health, Harvard University; BA, Sociology, Georgetown University.

Latest Publications

Characteristics of people who initiate injection drug use later in life — Drug and Alcohol Dependence
Arreola, S., Bluthenthal, R.N., Wenger, L., Chu, D., Thing, J., & Kral, A.H. (Feb 2014)
Unmet Healthcare Need Among Women Who Use Methamphetamine in San Francisco — Substance Use and Misuse
Powelson, E., Lorvick, J., Lutnick, A., Wenger, L., Klausner, J., & Kral, A.H. (Feb 2014)
'I felt like a superhero': The experience of responding to drug overdose among individuals trained in overdose prevention — International Journal of Drug Policy
Wagner, K.D., Davidson, P.J., Iverson, E., Washburn, R., Burke, E., Kral, A.H., et al. (Jan 2014)
Activity spaces among injection drug users in San Francisco — International Journal of Drug Policy
Martinez, A.N., Lorvick, J., & Kral, A.H. (Nov 2013)
Low-frequency heroin injection among out-of-treatment, street-recruited injection drug users — Journal of Urban Health
Harris, J.L., Lorvick, J., Wenger, L., Wilkins, T., Iguchi, M.Y., Bourgois, P., & Kral, A.H. (Apr 2013)
View all publications by Alex H. Kral (87)