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

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 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 ...

Genetic analysis of H5N1 bird flu viruses from a severely ill patient in Louisiana revealed multiple mutations that may ...

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

Felines of all varieties tend to explore and hunt smaller prey, such as birds and mice, which can carry bird flu.

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 ...

A genetic analysis of the H5N1 bird flu in a Louisiana patient reveals potential mutations for human transmissibility, says ...

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.

The CDC has declared the first “severe” case of H5N1 bird flu in the U.S., according to a press release published Wednesday.