How do vaccines work? - Kelwalin Dhanasarnsombut
How do vaccines work? - Kelwalin Dhanasarnsombut
TED-Ed Lesson: 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?…