Bill Moss is the executive director of the International Vaccine Access Center. Moss is a professor in the Departments of Epidemiology, International Health and Molecular Microbiology and Immunology at The Johns Hopkins University. He is also the deputy director at the Johns Hopkins Malaria Research Institute. He is a pediatrician with subspecialty training in infectious diseases and has worked in Ethiopia, Kenya, South Africa, Zambia, Zimbabwe and India, among other countries.