How do vaccines work? – Kelwalin Dhanasarnsombut

Learn the science behind how vaccines trigger an immune response and teach our bodies to recognize dangerous pathogens.

—

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? Kelwalin Dhanasarnsombut details the science behind vaccines.

Lesson by Kelwalin Dhanasarnsombut, animation by Cinematic.

Sign up for our newsletter: http://bit.ly/TEDEdNewsletter
Support us on Patreon: http://bit.ly/TEDEdPatreon
Follow us on Facebook: http://bit.ly/TEDEdFacebook
Find us on Twitter: http://bit.ly/TEDEdTwitter
Peep us on Instagram: http://bit.ly/TEDEdInstagram
View full lesson: http://ed.ted.com/lessons/how-do-vaccines-work-kelwalin-dhanasarnsombut