First time bird flu found in U.S.pigs worries health experts.

Bird flu was found in a pig on a farm in Oregon. This is the first time the virus has been seen in pigs in the U.S. and it worries some people.

The farm had chickens with bird flu and the pig lived near them. All the pigs on the farm were killed so scientists could study them.

Experts are worried because pigs can get sick from bird flu and human flu. Sometimes, the flu virus can mix in pigs and create a new flu that is dangerous to people.

Scientists checked the virus in the Oregon pig and it doesn't seem more dangerous to people. They say it's important to watch for the virus spreading to more pigs and people.

This type of bird flu has infected a few people in the U.S. already, but they only had mild symptoms. Almost all of them got sick after being near infected birds.