Grace John Stewart MD, PhD is a Professor of Medicine and Epidemiology at the University of Washington. 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 was trained as an internist and pediatrician prior to infectious diseases, and received a PhD in epidemiology.