Minimal infective dose

Okay kiddo, have you ever heard of germs? They're teeny tiny things that can make us sick. But did you know that we need to be exposed to a certain amount of germs before we actually get sick? That's where the minimal infective dose comes in.

Think of it like a game. The germs are playing a game of tag with our bodies. But, just one germ is too weak to actually tag us and make us sick. They need to work together and team up to be strong enough to tag us.

So, the minimal infective dose is the specific number of germs that need to team up together to be strong enough to make us sick. It's different for every type of germ, some might only need a few teammates while others need a lot more.

Doctors and scientists study the minimal infective dose so they can figure out how many germs we need to be exposed to in order to get sick. This helps them understand how diseases spread and how to stop them.

Remember though, even if we are exposed to the minimal infective dose, washing our hands and taking other precautions can help keep us healthy!