Professor, Global Health
Director, International Core
Dr. John-Stewart has served as the Director of the International Core since 2008. She was trained as an internist and pediatrician prior to infectious diseases, and received a PhD in Epidemiology. Her research is focused on international HIV-1 studies, primarily based in Kenya. These include studies of transmission, prevention, clinical epidemiology, clinical trials, and molecular epidemiology. Her interests include mother-to-child transmission of HIV-1, pediatric HIV-1 and co-infections, HIV-1 acquisition and pathogenesis, treatment and delivery of HIV-1 treatment and prevention services. Dr. John-Stewart is also the Director of the University of Washington Global Center for Integrated Health of Women, Adolescents and Children (Global WACh).
HIV-1 transmission, mother-to-child transmission of HIV-1, treatment of HIV-1
Country Affiliations: Kenya
PhD, University of Washington
MPH, University of Washington
MD, University of Michigan
BS, University of MIchigan
Nduati R, John G, Mbori-Ngacha D, Richardson B, Overbaugh J, Mwatha A, Ndinya-Achola J, Bwayo J, Onyango FE, Hughes J, Kreiss J. Effect of breastfeeding and formula feeding on transmission of HIV-1: A randomized clinical trial. JAMA 2000;283:1167-1174.
John G, Nduati RW, Mbori-Ngacha DA, Richardson BA, Panteleeff DD, Mwatha A, Overbaugh J, Bwayo J, Ndinya-Achola JO, Kreiss JK. Correlates of mother-to-child transmission of HIV-1 in the Kenyan breastfeeding clinical trial. J Infect Dis 2001;183:206-12. 
Nduati R, Richardson BA, John G, Mbori-Ngacha D, Overbaugh J, Mwatha A,Ndinya-Achola J, Bwayo J, Kreiss J. Effect of breastfeeding on maternal mortality among HIV-1 infected women. Lancet 2001;357:1651-55. 
Chung M, Kiarie J, Richardson B, Lehman D, Overbaugh J, John-Stewart G. Breast milk HIV-1 Suppression and Decreased Transmission: a randomized trial comparing HIVNET 012 nevirapine vs. short-course zidovudine. AIDS 2005; 19:1415-1422.
Walson JL, Otieno PA, Mbuchi M, Richardson B, Lohman-Payne B, Macharia SW, Overbaugh J, Berkley J, Sanders E, Chung M, John-Stewart GC. Albendazole treatment in HIV-1 and helminth co-infected adults: A randomized, double blind, placebo-controlled trial. AIDS 2008; 22(13):1601-1609.
University of Washington
325 9th Avenue
Seattle, WA 98104
gjohn at uw.edu