How measles was eliminated and then came back
The measles, mumps and rubella vaccine is 97% effective, so why are we seeing so many outbreaks? CNN’s Chief Medical Correspondent Dr. Sanjay Gupta explains why the contagious disease is spreading.
Source: https://www.cnn.com/videos/health/2019/05/02/measles-outbreak-explainer-gupta-orig-llr.cnn
