NPR’s Sacha Pfeiffer speaks with Dr. Paul Offit, director of the Vaccine Education Center at the Children’s Hospital of Philadelphia, about the last time the U.S. mandated measles vaccinations.
How Philadelphia Mandated Vaccinations In 1991
NPR’s Sacha Pfeiffer speaks with Dr. Paul Offit, director of the Vaccine Education Center at the Children’s Hospital of Philadelphia, about the last time the U.S. mandated measles vaccinations.