Dr. Stefan Wiktor is a public-health physician with more than twenty-five years’ experience in epidemiologic research and implementation of public-health programs. Dr. Wiktor is a Professor in the Department of Global Health at the University of Washington, Seattle U.S. Until recently, Dr. Wiktor was the Team Lead of the World Health Organization’s Global Hepatitis Programme in Geneva, Switzerland which works with WHO Regional and country officials to promote the implementation of comprehensive viral hepatitis prevention and control programs. Prior to that, while working for the U.S. Centers for Disease Control and Prevention, he conducted research studies of HIV-1 and HIV-2 epidemiology in West Africa and led the implementation of a large-scale HIV/AIDS prevention and treatment program in Tanzania. He is the author of more than 100 peer-reviewed scientific publications. He received his medical degree from Pennsylvania State University School of Medicine, public health degree from Johns Hopkins University and completed his internal medicine training at Georgetown University.