Fading Immunity to MMR Vaccine May Be Behind the Mumps Epidemic
Hi. My name is Paul Offit. I'm talking to you today from the Vaccine Education Center at the Children's Hospital of Philadelphia.
Last year in the United States, there were 5642 cases of mumps. [Editor's note: These were the case numbers noted at the most recent Advisory Committee on Immunization Practices Working Group meeting on February 22, 2017.] That was the biggest mumps epidemic we've had in a long time, and it included 19 university-based outbreaks. To find out what happened, let's go back to the beginning.