The U.S. reported its first severe human case of bird flu on Wednesday in a Louisiana resident who is hospitalized in critical condition after suspected contact with an infected backyard flock.

A resident of southwestern Louisiana has been hospitalized with a severe case of bird flu linked to a backyard flock.

One person in Barron County, Wisconsin, is believed to be the first in the state this year to have contracted bird flu after being exposed to an infected flock.