Scott Ratzan has made major contributions to improve public health. Pioneer in health literacy and mobile health communication. Editor-in-Chief, Journal of Health Communication: International Perspectives. Member: Board of Scientific Counsellors, Centers for Disease Control and Prevention Office of Infectious Disease; RAND Health Advisory Board; Massachusetts General Hospital Center for Global Health Advisory Board. Vice-Chair, health, Business Industry Advisory Committee to the OECD. Adjunct Professor, Columbia Univ. Mailman School of Public Health. Appointments at Tufts Univ. School of Medicine and George Washington Univ. School of Public Health and Health Services.