[youtube [www.youtube.com/watch](https://www.youtube.com/watch?v=y0opgc1WoS4?feature=oembed&enablejsapi=1&origin=https://safe.txmblr.com&wmode=opaque&w=250&h=141])

laughingsquid:

An Easy-to-Understand Animation Demonstrating How Measles Work and How Vaccines Protect Against the Disease