Paul A. Offit, M.D. is the chief of Infectious Diseases and the director of the Vaccine Education Center at the Children's Hospital of Philadelphia as well as the Maurice R. Hilleman Professor of Vaccinology and professor of pediatrics at the University of Pennsylvania School of Medicine. He has received numerous awards, including the J. Edmund Bradley Prize for Excellence in Pediatrics from the University of Maryland School of Medicine, the Young Investigator Award in Vaccine Development from the Infectious Diseases Society of America, and a Research Career Development Award from the National Institutes of Health. An international expert on rotavirus-specific immune responses, Dr. Offit is the coinventor of the rotavirus vaccine RotaTeq, for which he received the Jonas Salk Award from the Association for Professionals in Infection Control and Epidemiology, the Gold Medal from the Children's Hospital of Philadelphia, and the Stanley A. Plotkin Award in Vaccinology from the Pediatric Infectious Diseases Society. He has donated all royalties from sales of this book to autism research.