Okay kiddo, so you know how sometimes we get sick and we need medicine to help us feel better? Well, right now there is a really bad sickness going around called COVID-19, and scientists are working really hard to make medicine to help people who have it.
First, they have to figure out what makes the sickness happen inside our bodies. They found out that there is a tiny thing called a virus that makes us sick. This virus is like a bad guy that sneaks into our bodies and starts causing trouble.
So, the scientists are trying to make medicine that can fight off the virus and make it go away. They do this by testing a lot of different things, like medicine that has worked for other diseases or new medicine they make just for this sickness.
They test the medicine on animals first to make sure it is safe, and then they test it on people who have COVID-19. If the medicine works on people and doesn't make them sicker, then it might become a medicine that doctors can give to people who have COVID-19 to make them feel better.
It takes a long time for the scientists to figure out if the medicine works, because they have to test it a lot of times and make sure it is safe. But they are working really hard to find medicine that can help people who have COVID-19 feel better and get well.