How do new mRNA vaccines protect against emerging viruses?

New mRNA vaccines work like a special message that helps your body fight off new viruses quickly.

Imagine you're playing hide and seek, and someone tells you where to look, that’s like an mRNA vaccine telling your body what the virus looks like. When you get vaccinated, your body reads this message and makes little soldiers called proteins that match the virus. These soldiers help your body remember how to fight it if it comes back.

When a virus changes or a new one shows up, your body might not know what it looks like at first, kind of like when you play hide and seek with someone who hides in a new place. But the mRNA vaccine gives your body a head start. It can read the message again and make more soldiers that match the new virus faster than before.

So even if a virus changes, the mRNA vaccine helps your body stay one step ahead, just like having a map to find the best hiding spots!