Faculty

Grace C. John-Stewart

Professor, Epidemiology
Professor, Global Health
Professor, Medicine - Allergy and Infectious Dis.
Professor, Pediatrics
Director, Global Center for the Integrated Health of Women, Adolescents, & Children, Global Health

206-543-4278

Education

MD Medicine, University of Michigan, 1987
MPH Epidemiology, University of Washington, 1995
PhD Epidemiology, University of Washington, 2000

Contact

206-543-4278

Global Center for Integrated Health of Women, Adolescents and Children (Global WACh)
325 9th Avenue, Box 359909
Seattle, WA 98104

Bio

Grace John-Stewart MD, PhD is a Professor in the Departments of Global Health, Medicine, Epidemiology and Pediatrics at University of Washington. Her research focuses on advancing infectious diseases research in women, adolescents and children, as part of a collaborative research in Kenya. This work has included clinical trials, molecular epidemiology, implementation science, and large-scale evaluations. She is Co-Director of the UW Center for Global Health of Women, Adolescents and Children (UW Global WACh), an Associate Director of UW/Fred Hutch Center for AIDS Research (CFAR), and a member of the Kenya Research and Training Center.

Research Areas

Research Interests

Dr. Grace John-Stewart is a Professor of Global Health, Medicine, Epidemiology, and Pediatrics at the University of Washington. Her interests include prevention of mother-to-child transmission of HIV (PMTCT), improving outcomes for children with HIV, and addressing relevant co-infections that affect women and children with HIV (including TB, pneumonia, diarrhea, CMV). Dr. John-Stewart has published over 600 peer-reviewed articles. Her research is based in Kenya and includes molecular epidemiologic studies, clinical trials, implementation science studies, and program evaluations focused on HIV and maternal child health. She received the Elizabeth Glaser Scientist Award for research on mother-to-child transmission of HIV. Dr. John-Stewart has mentored numerous trainees, received a K24 Mentorship Award, and received a UW School of Medicine mentorship award. She is the Director of the UW CFAR International Core and the UW Global Center for Integrated Health of Women, Adolescents and Children (Global WACh).

Recent Publications (PubMed)

An Fc receptor and IgA functional signature identifies TB disease in children living with HIV.
(2026 Sep 17)
J Pediatric Infect Dis Soc
Kang YJ, Wang N, Malik A, Lu P, Grossman A, Njuguna I, Maleche-Obimbo E, LaCourse SM, Slyker J, Wamalwa D, John-Stewart GC, Wang C, Cranmer LM, Lu LL
Motivations of Pregnant Women Initiating HIV Preexposure Prophylaxis Within Routine Antenatal Clinics Enrolled in a Randomized Trial in Western Kenya.
(2026 Sep 10)
J Assoc Nurses AIDS Care
Watoyi S, Larsen A, Akim E, Concepcion T, Mogaka J, Abuna F, Gómez L, Ngumbau N, Odhiambo BO, Nzove EM, Kinuthia J, John-Stewart G, Pintye J
A rapid qualitative analysis of health care worker and community focus groups on determinants and implementation strategies for long-acting PrEP in antenatal and postpartum settings in Kenya.
(2026)
Discov Health Syst 5(1): 74
Concepcion T, Strong M, Kinuthia J, Otieno FA, Akim E, Aketch H, Gómez L, John-Stewart G, Suh BM, Ngumbau N, Nzove EM, Mogaka JN, Obatsa S, Odhiambo BO, Omom C, Wagner AD, Watoyi S, Pintye J
Changes in neurodevelopmental outcomes from 24 to 36 months among children HIV-exposed uninfected (CHEU) and HIV-unexposed (CHU).
(2026 Aug 13)
AIDS
Tiwari R, Collett BR, Oucho I, Otieno C, Lihanda P, Magedson A, Diakhate M, John-Stewart GC, Aldrovandi GM, Wamalwa D, Singa BO, Benki-Nugent S, McGrath CJ
Outcomes of the Three-month Weekly Isoniazid With Rifapentine (3HP) Versus the Six-month Isoniazid Preventive Therapy (6H) Among People Newly Enrolled in HIV Care in Western Kenya.
(2026 Jul)
Open Forum Infect Dis 13(7): ofag416
Onyango DO, Mecha JO, Njagi LN, Aoro S, Malika T, Kinuthia J, John-Stewart G, LaCourse SM
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