About the Author

Paul A. Offit, M.D. is the Director of the Vaccine Education Center at the Children's Hospital of Philadelphia and the Maurice R. Hilleman Professor of Vaccinology and Professor of Pediatrics at the University of Pennsylvania. The co-inventor of the rotavirus vaccine for infants, he has appeared on The Today Show, Good Morning America, CBS This Morning, 60 Minutes, and many other programs. He lives near Philadelphia, PA.