June 14, 2018: What's behind a resurgence of mumps in the United States?

In the early 21st century there was hope that the success of the mumps vaccine in the United States would pave the way for the eventual elimination of the highly contagious disease. But since 2006 there's actually been a resurgence of mumps. In this week's podcast Yonatan Grad, assistant professor of immunology and infectious diseases, explains how the waning effectiveness of the vaccine may be contributing to outbreaks of the virus.