Understanding how vaccines work

Center for Disease Control
Difficulty: 4/10
Read time: 10 minutes
PDF can be downloaded here


This is a brief primer provided by the CDC explaining the details of how vaccines protect the body from subsequent infection. It outlines general concepts including

  1. How vaccines work
  2. Different types of vaccines
  3. Why some vaccines require multiple doses


Recommended as a short overview of how vaccines work, and why they are important.