Summary
No need to fear needles at the doctor's office—they're good for you! In this BrainPOP movie, Tim and Moby discuss vaccines and how they work. You’ll learn how vaccines trick your body and why your immune system responds to vaccines. Find out how you form immunities to germs, what white blood cells do, and how vaccines create a sort of training session for your body’s defenses. Discover why people only get chicken pox once and why you may need several doses of a vaccine for it to work. Plus, see what new kinds of vaccines doctors are working on - and we don’t mean to prevent computer viruses!
Viewer safety
Ages 7+
Our rating is a quick teacher-to-teacher guide — preview before showing.
Teaching resources
Discussion questions
A few questions to talk through after watching Vaccines:
- What is one new thing you learned about vaccines?
- Can you explain it to a partner in your own words?
- Where might you see this in the real world?
- What is one question you still have?
Quick work-a-long
Try it:
- Write one sentence explaining vaccines.
- Draw or give one example of your own.


