How do vaccines work?
Educator: Kelwalin Dhanasarnsombut
Script Editor: Emma Bryce
Narrator: Addison Anderson
The first-ever vaccine was created when Edward Jenner, an English physician, and scientist, successfully injected small amounts of a cowpox virus into a young boy to protect him from the related (and deadly) smallpox virus. But how does this seemingly counterintuitive process work?