The CDC previously confirmed the first severe human case of bird flu in Louisiana, but now the CDC has confirmed a virus ...

Previous seasonal flu infections and vaccinations may protect us against infection from the highly pathogenic H5N1 bird flu ...

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

Federal health officials say that not only has a Louisiana resident contracted the first severe case of bird flu in the U.S., ...

A genetic analysis of the bird flu in the body of a Louisiana man who contracted the first severe case found it mutated ...

Federal health officials have confirmed unsettling new details about the first United States case of severe bird flu, ...

Public health officials have warned that new mutations of bird flu with human flu could have dangerous consequences.

Public health experts are urging vigilance amid recent reports of severe bird flu cases in two North American patients.

A genetic analysis suggested the bird flu virus mutated inside a Louisiana patient who contracted the nation's first severe ...

The CDC said Thursday its analysis of samples from a Louisiana patient with bird flu showed mutations not seen in samples ...

The agency, in its latest update released Thursday, said the mutations were not found in samples taken from wild birds, ...