Bioterrorism is when bad people use germs and viruses as weapons to hurt other people. You know how you get sick when you catch a cold from your friend at school? Well, imagine if someone made really strong and harmful germs that could make a lot of people sick all at once. They could even make people die from being sick.
Bioterrorists might try to spread these harmful germs in places like big cities, where a lot of people live close together. They could do this by spreading the germs in the air, in water or in food.
This is a really scary thing to think about, and that's why scientists and doctors work really hard to find ways to protect us from these harmful germs. They have special tests they can do to see if someone has been infected, and they have medicine that can help people get better if they do get sick.
It's important to remember that most people in the world are good and don't want to hurt other people, but there are some people who do. That's why we need to be careful and make sure we wash our hands and take care of our bodies to stay healthy.