How do mRNA vaccines protect against disease?

mRNA vaccines are like giving your body a map to fight off invaders.

Imagine you're playing hide and seek, and someone gives you a picture of where they’re hiding. That’s kind of what mRNA vaccines do, they give your body a message that shows how to make a protection tool against a virus.

When you get an mRNA vaccine, it sends a message into your cells. This message tells them how to build a copy of a part of the virus, like a tiny piece of a puzzle. Your body uses this information to create a special protein, which is like a shield that helps your immune system recognize and fight off the real virus later.

Once your body makes these proteins, it notices them and starts getting ready for battle. It builds an army of soldiers, called immune cells, that remember how to fight that particular virus. So if you ever meet the real virus, your body knows exactly what to do and can stop the disease from making you sick.

It’s like practicing for a game, the more you practice, the better you get at winning!