A chilling milestone in U.S. public health has been confirmed. The Centers for Disease Control and Prevention (CDC) recently announced the nation’s first severe case of avian

The United States has confirmed its first known severe human infection of H5N1 bird flu, in a person in Louisiana believed to have contracted the virus through contact with sick or dead birds in a backyard flock.

A patient in Louisiana has been hospitalized with a severe case of H5N1 bird flu, the US Centers for Disease Control and Prevention said, the first such case in the United States.

In a case first reported in Louisiana, a patient has now developed the first known case of bird flu so severe as to require hospitalization.

A person in Louisiana has the first severe illness caused by bird flu in the U.S., health officials said Wednesday.