Do you know who Dr. Paul Offit is? I know him after reading his book. His books are really interesting. Dr. Paul Offit, MD, is a pediatrician specializing in infectious disease medicine an internationally known expert on vaccines, immunology and virology, the Maurice R. Hilleman Professor of Vaccinology, Professor of Pediatrics at the University of Pennsylvania, Chief of the Division of Infectious Diseases, and the Director of the Vaccine Education Center at The Children’s Hospital of Philadelphia. He has been a member of the Centers for Disease Control’s (CDC) Advisory Committee on Immunization Practices. More than 120 papers in medical and scientific journals in the areas of rotavirus-specific immune responses and vaccine safety and is the co-inventor of a rotavirus vaccine recently recommended for universal use in infants by the CDC he has published and co-author of several books. From what I know about him after I read his book, I recommend you to read Dr. Paul Offit books. They are really interesting and usable books to read.