Dr. Scott Dowell, from the U.S. Centers for Disease Control, is in Thailand trying to stop the flu from spreading and killing. The U.S. and Thailand are working together to find ways to control this virus that kills seven of every ten people who contract it. Normal influenzas kill about one in 100.

“Certainly this virus now is one of the deadliest viruses that affects humans,” says Dowell. “The good news is, it doesn’t affect very many.”

Experts say bird flu can’t be beaten