How do mRNA vaccines work to prevent viral infections?

An mRNA vaccine helps your body learn how to fight off a virus by giving it instructions, like a recipe.

Imagine you're in a kitchen, and someone gives you a secret recipe for making a cookie that stops a sneaky thief (the virus). The recipe is written on a special note. Your body reads the note and makes the cookie, which helps protect you from the thief.

In real life, an mRNA vaccine works like this secret recipe. It gives your body instructions to make a piece of the virus, called a protein. This protein looks just like part of the real virus, but it’s not harmful.

Once your body makes that protein, your immune system, like a superhero team, notices it and starts preparing for battle. They remember how to fight off the virus so that if the real virus comes along later, they can stop it quickly.

That’s why you feel protected after getting an mRNA vaccine, your body is ready for the virus's surprise attack!