Skip Navigation

Faculty Directory

Stefan Baral, MD

  • Director, Key Populations Program
  • Associate Professor

Departmental Affiliations

  • Epidemiology (Primary)
    • Division: Infectious Disease Epidemiology

Center & Institute Affiliations

Contact Information

615 N. Wolfe Street
Room E7146
Baltimore, Maryland 21205

(410) 614-8371


MD, Queen's University, 2005
MBA, Johns Hopkins Carey Business School, 2007
MPH, Johns Hopkins Bloomberg School of Public Health, 2007
MSc, McMaster University, 2001


Stefan Baral is a physician epidemiologist and an Associate Professor in the Department of Epidemiology at the Johns Hopkins School of Public Health (JHSPH).  Stefan completed his certification in Community Medicine as a Fellow of the Royal College of Physicians and Surgeons of Canada and Family medicine with the Canadian Council of Family Physicians.

 Stefan has also been involved in HIV epidemiology, prevention, and implementation research focused on the epidemiology, human rights contexts, and effective interventions for gay men and other men who have sex with men, transgender women, and female sex workers across Western and Central, and Southern Africa and parts of Asia with support from USAID, CDC, NIH, amfAR, and the Global Fund.  In addition, Stefan has led or supported the implementation and evaluation of HIV prevention studies globally characterizing effective combination HIV prevention packages for key populations across multiple low and income countries.  Stefan acts as the Director of the Key Populations Program for the Center for Public Health and Human Rights at the JHSPH

Honors and Awards


C.P. Shah Award for Resident Research Project, Dalla Lana School of Public Health, University of Toronto




Designated as one of the  “Leaders of Tomorrow”, Faculty of Medicine, University of Toronto




Award for Best Resident Research Project, Department of Family and Community Medicine, University of Toronto




Patient Advocacy Award, Department of Family and Community Medicine, University of Toronto




High Commendation, 90/10 Health Gap Essay Competition, , Global Forum for Health Research



Medical Student Citizenship Award, Professional Association of Residents and Interns of Ontario (PAIRO)  




Betty O’Neil Scanlon & Dr. Francis Cannella Bursary, Faculty of Medicine, Queen’s University

  • epidemiology, men who have sex with men, most at risk populations, criminalization, human rights abuses, HIV, sexually transmitted infections, Africa, sex work, injection drug users
    Baral S, Beyrer C, Muessig K, et al. Burden of HIV among female sex workers in low-income and middle-income countries: a systematic review and meta-analysis. Lancet Infect Dis 2012; 12(7): 538-49
    Baral S, Sifakis F, Cleghorn F, Beyrer C. Elevated risk for HIV infection among men who have sex with men in low- and middle-income countries 2000-2006: a systematic review. PLoS Med 2007; 4(12): e339.
    Schwartz S, Nowak R, Orazulike I, Keshinro B, Ake J, Kennedy S, Njoku O, Blattner W, Charurat M, Baral S, on behalf of the TRUST Study Group.  The immediate effect of the Same-Sex Marriage Prohibition Act on stigma, discrimination, and engagement on HIV prevention and treatment services in men who have sex with men in Nigeria: analysis of prospective data from the TRUST cohort. The Lancet HIV. Published online 1 June 2015.
    Baral SD, Wirtz A, Sifakis F, Johns B, Walker D, Beyrer C. The Highest Attainable Standard of Evidence (HASTE) for HIV/AIDS Interventions: Toward a Public Health Approach to Defining Evidence. Public Health Rep 2012; 127(6): 572-84.
    Peitzmeier, S. M., A. Grosso, A. Bowes, N. Ceesay and S. D. Baral (2015). "Associations of Stigma With Negative Health Outcomes for People Living With HIV in the Gambia: Implications for Key Populations." J Acquir Immune Defic Syndr 68 Suppl 2: S146-153.