How Does a Vaccine Protect the Body?

Vaccines teach the body to fight germs before they attack. Imagine your immune system is like a team of superheroes who need training. A vaccine gives them a practice battle with a fake germ, so when the real one shows up, they can beat it quickly.

Some vaccines have weakened germs or parts of germs that are still recognizable to your body. These little bits help your immune system remember how to fight them.

When you get vaccinated, the fake germ enters your body and wakes up your immune team. They create special fighters called antibodies. If the real germ comes later, those antibodies can stop it right away.