Prof. Heidi J. Larson is an anthropologist and Director of The Vaccine Confidence Project; Professor of Anthropology, Risk and Decision Science, Dept. Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine; Clinical Professor, Institute of Health Metrics & Evaluation, University of Washington; and Chatham House Centre on Global Health Security Fellow. Dr. Larson previously headed Global Immunisation Communication at UNICEF, chaired GAVI’s Advocacy Task Force, and served on the WHO SAGE Working Group on vaccine hesitancy.