A new mutation and the first severe case of H5N1 bird flu discovered in a human in Louisiana has raised concern among some ...

The virus in the first severe human bird flu case in the U.S. was found to have mutated. Follow Newsweek's live blog for ...

We are in a terrible situation and going into a worse situation,” said Angela Rasmussen, a virologist at the University of ...

Exclusive reporting reveals how the United States lost track of a virus that could cause the next pandemic. Problems like the ...

Newsweek has created a map showing which states have recorded the most human bird flu cases, after the first human case of ...

The CDC just confirmed the first case of severe bird flu in the U.S, and California just declared a state of emergency.

At least 61 people in the US have contracted bird flu amid outbreaks in poultry and dairy cows. What are the symptoms? What ...

Louisiana reported a person hospitalized with a severe case of H5N1, and the USDA has begun bulk milk testing ...

The Centers for Disease Control and Prevention called it the first severe case in the U.S., though the risk to most of the ...

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