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

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 has spread among dairy cattle, humans and other mammals. But officials say the current public health risk is low.

The CDC has confirmed a total of 66 human cases of bird flu across the United States as of Friday, although the number is believed to be higher.

Samples from a hospitalized patient in Louisiana show changes that could make the H5N1 virus spread more easily between ...

A genetic analysis of viral samples from a patient in Louisiana hospitalized with the first severe case of bird flu showed ...

A genetic analysis suggests the bird flu virus mutated inside a Louisiana patient who contracted the first severe case of the ...

The U.S. Centers for Disease Control and Prevention said on Thursday its analysis of samples from the first severe case of ...

As Mark McAfee — the maverick leader of California’s largest raw milk dairy — works on getting his Fresno County dairy out of ...

As flu season ramps up in the U.S., influenza is not as simple as it first appears, with several different strains in play.

Our attempts to educate people that there could be a risk from raw milk of avian flu seems to have been countered by” ...

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