Why diphtheria whooping cough and measles have come back in australia?

Diphtheria, whooping cough, and measles have come back in Australia because some people stopped getting their shots, like when you forget to brush your teeth before bed.

Think of vaccines as toothbrushes for your body. When you get a shot, it helps your body learn how to fight off germs, just like brushing your teeth helps keep them clean. But if people don’t get their shots anymore, the germs can come back and spread easily.

Imagine the playground is full of kids who are all playing nicely together. Then some kids stop washing their hands before eating lunch, that’s like not getting a shot. Soon, more kids start getting sick, and the whole playground gets messy again. That’s what happened in Australia, germs came back because fewer people were protected by their shots.

So, just like you need to brush your teeth every day to keep them healthy, people need to get shots regularly so the germs can’t take over the playground again.