How do new mRNA vaccines differ from traditional vaccine technologies?

New vaccines help our bodies get ready to fight germs before they come.

Traditional vaccines are like giving your body a practice match with a weaker version of the germ. Think of it like playing against a friend who isn’t very fast, you learn how to run, but not too hard. These vaccines often use parts of the germ or even a dead germ so our bodies can recognize them.

mRNA vaccines, on the other hand, are more like giving your body a playbook. Imagine you get a special note that tells your body exactly what the germ looks like, and then your body uses that note to make its own version of the germ. It’s like learning how to draw a picture just by reading instructions.

Traditional vaccines are made using parts of the germ or even whole germs (but dead ones). These parts go into our bodies, and our immune system learns what they look like, sort of like memorizing a friend’s face before a test.

mRNA vaccines use tiny messages (mRNA) that tell your body to make proteins that are found on the germ. Your body then makes its own version of those proteins, kind of like building a model of a robot from instructions you got in the mail.