The CDC warns samples of the bird flu virus show signs of mutations that could make it more transmissible to humans. The CDC ...

Here’s what to know about the United States’ first confirmed severe case of H5N1 avian influenza—and how to protect yourself.

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

Tiny genetic alterations could help the bird flu virus enter cells in the upper respiratory tract, the C.D.C. said. But there ...

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

The highly pathogenic avian influenza, also known as H5N1 bird flu, was confirmed in the flock of 24 birds in Franklin County after samples taken on Dec. 19 were tested by laboratory in Iowa, the ...

The presence of highly pathogenic avian influenza, or H5N1 bird flu, has been confirmed after officials worked to quarantine ...

When, where and how the H5N1 bird flu virus may evolve and its capacity to spark a pandemic is hard to predict — in part, ...

Northwest Naturals is recalling a batch of its pet food after a cat died from bird flu, which was found in the cat food. Bird ...

The first severe case of H5N1 bird flu was confirmed in Louisiana. Here is a map of other states that have been affected.

(CNN) — A genetic analysis of samples from the patient in Louisiana recently hospitalized with the country’s first severe ...

Los Angeles County health officials have identified three more cats with presumptive H5N1; the source of the virus has not ...