Animals on farms are sick. This sickness is called foot-and-mouth. It spreads very fast.
Doctors must kill some animals. This stops the sickness. Animal doctors work hard. They want to stop it.
The problem is in one place. It moves to another place. A big farm has many cows. About 260 cows will die.
Doctors make a safe area. No animals can move. Police watch cars. Cars are cleaned.
Why it started is a question. Maybe bad food. Maybe not clean farms.
The leaders say it is okay. People can eat meat. Farmers will get money. More doctors are helping. Farms are watched.