Orin S. Levine was a visitng fellow at CGD. He is an associate professor in the Department of International Health, Johns Hopkins Bloomberg School of Public Health, and executive director of the International Vaccine Access Center. Levine received his undergraduate degree from Gettysburg College and his PhD in epidemiology from Johns Hopkins Bloomberg School of Public Health. He is an epidemiologist, trained in control and prevention of infectious diseases, especially respiratory infections in developing countries. For nearly 20 years, Levine has worked on efforts to accelerate the development, evaluation, and introduction of new vaccines against Streptococcus pneumoniae, Haemophilus influenzae type B, meningococcal, dengue fever, and other diseases. His experience includes leading evaluations of vaccines in phase 2 and 3 studies in developing countries and serving as the principal investigator at Johns Hopkins for the Accelerated Vaccine Initiative-Technical Assistance Consortium, which evaluates the impact of pneumococcal and rotavirus vaccines in GAVI-eligible countries. Levine has authored over 100 peer-reviewed publications and book chapters. He blogs regularly on the Huffington Post and is frequently sought after for interviews by print, radio, and television media.