Paul A. Offit, MD is the Chief of the Division of Infectious Diseases and the Director of the Vaccine Education Center at the Children’s Hospital of Philadelphia. He is the Maurice R. Hilleman Professor of Vaccinology and a Professor of Pediatrics at the University of Pennsylvania School of Medicine. Dr. Offit is a founding advisory board member of the Autism Science Foundation?to which he is donating the royalties from this book?and the author of five books including Autism’s False Prophets and Vaccinated. He lives in Bala Cynwyd, Pennsylvania.