Grace John-Stewart Grace John-Stewart, MD, MPH, PhD is a Professor in the Departments of Global Health, Medicine, Epidemiology, and Pediatrics at the University of Washington in Seattle, USA. Trained as a pediatrician/internist, infectious diseases specialist, and epidemiologist, her research focuses on advancing HIV prevention and treatment. She directs research on prevention of mother-to-child HIV transmission (PMTCT), pediatric and adolescent HIV, and co-infections (including TB and CMV), using approaches that include molecular epidemiology, clinical trials, and implementation science. Her research has resulted in over 300 publications. Dr. John-Stewart is committed to mentorship of pre-doctoral and post-doctoral trainees and junior faculty. She is Director of the University of Washington Center for Integrated Health of Women, Adolescents, and Children (Global WACh) and Associate Director of the University of Washington/Fred Hutch Center for AIDS Research.