Paul A. Offit, MD, discusses his latest book on the stories behind medical innovation

The long and winding road to new innovations in medicine, from vaccines to complex organ transplants, are not paved in gold. Quite the opposite. In his latest book, Paul A. Offit, MD, director of the Vaccine Education Center and professor of Pediatrics in the Division of Infectious Diseases at Children's Hospital of Philadelphia, discusses the sobering reality behind medical discovery.