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Stefan Baral

Departmental Affiliations

Infectious Disease Epidemiology
Global Disease Epidemiology and Control

Contact Info

615 N. Wolfe Street, Room E7146
(410) 614-8371

Research Interests

epidemiology; implementation research; stigma; key populations; human rights; HIV, sexually transmitted infections, gay men and other men who have sex with men, Sub-Saharan Africa, sex work, people who use drugs

Experiences & Accomplishments
Johns Hopkins Bloomberg School of Public Health
Johns Hopkins Carey Business School
Queen's University
McMaster University
McGill University

Stefan Baral is a physician epidemiologist and a 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 is the co-director of the Program for Implementation and Equity Research (PIER) within the Center for Public Health and Human Rights and focuses on epidemiology, prevention, and implementation research related to infectious diseases, stigma, and mental health among historically marginalized populations with funding from the National Institutes of Health, the Foundation for AIDS Research (amFAR), the Global Fund, and others.  Stefan is the co-director of both Implementation Science core of the Center for AIDS Research (CFAR) and the NIH-funded Mid-Atlantic Consortium (MACC+) Implementation Science support hub.  Academically, Stefan co-directs the Implementation Science concentration of the DrPH and teaches two implementation research methods courses.

Honors & Awards

2018 Research Contributions to Health in Senegal, Ministry of Health, Senegal
2015 Global Health Advising Award, Center for Global Health, Johns Hopkins School of Public Health
2012 Global Health Advising Award, Center for Global Health, Johns Hopkins School of Public Health
2009 C.P. Shah Award for Resident Research Project, Dalla Lana School of Public Health, University of Toronto
2008 Award for Best Resident Research Project, Department of Family and Community Medicine, University of Toronto
2008 Patient Advocacy Award, Department of Family and Community Medicine, University of Toronto
2006 High Commendation, 90/10 Health Gap Essay Competition, , Global Forum for Health Research
2004 Medical Student Citizenship Award, Professional Association of Residents and Interns of Ontario (PAIRO) 
2003 Betty O’Neil Scanlon & Dr. Francis Cannella Bursary, Faculty of Medicine, Queen’s University 
2003 Federal Government Millennium Scholarship (Canada)
2003 Canadian Institutes of Health Research Clinical Summer Studentship Award
2002 John McGill Yourex Scholarship, Faculty of Medicine, Queen’s University
2002 Federal Government Millennium Scholarship (Canada)
2002 Leukemia Society of Canada Summer Studentship Award
2001 Frank Newell Scholarship, Faculty of Medicine, Queen’s University
2001 Federal Government Millennium Scholarship (Canada)
2000 Lorne F. Lambier, Q.C. Cancer Research Scholarship, Faculty of Health Sciences, McMaster University

Select Publications

Stefan has published over 480 publications that can be viewed both through Pubmed and my Google Scholar profile.

Pubmed Bibliography 

Google Scholar Profile

  • 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.

R01MH110358 Baral (PI), Role: PI 05/05/2017– 02/28/2024 Validation of Stigma Metrics for Men Who Have Sex with Men
R01NR020437 Baral (PI), Role: PI 06/01/2021– 05/31/2026 Characterizing intersecting sexual, gender, and race-based stigmas affecting communities of US transgender women and cisgender men who are sexually active with men
R01AI170249 Baral (PI), Role: PI 09/01/2022– 08/31/2026 Leveraging Big Data Science to Focus the HIV Response in Countries with Generalized HIV Epidemics
R01MH132150 Baral (PI), Role: PI 08/15/2022– 08/14/2027 Integrating the Visualization and Use of Stigma Data to Maximize the Impact of the Ending the HIV Epidemic Initiative
R01NR016650 Baral (PI), Role: PI 09/26/2016– 06/30/2022 An Adaptive Randomized Evaluation of Nurse-Led HIV Treatment Retention
5777-JHU-DHHS-6664 Baral (PI), Role: PI 09/25/2017– 08/31/2022 Statistical Models for Estimating and Projecting HIV/AIDS Epidemics
PO20001194 Baral (PI), Role: PI 11/01/2019– 10/31/2022 Linkages Across the Continuum of HIV Services for Key Populations Affected by HIV
R01MH121161 Baral/Schwartz (PI), Role: PI 08/14/2020– 07/31/2025 Optimizing PrEP implementation and effectiveness among women at high risk for HIV acquisition in South Africa