A sample of the virus found in a critically ill patient in the US has shown signs of mutating to better suit human airways, although there is no indication it has spread beyond that individual.

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.

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Yes, pets can get bird flu from eating raw food. Pets can contract bird flu through contact with infected poultry or carcasses, or from eating contaminated food. Since cooking and pasteurization kill ...

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While dogs are not common carriers of bird flu, they can become infected, especially if exposed to sick or dead birds.

Genetic analysis suggests the H5N1 virus has the capacity to mutate in ways that could make it more transmissible to humans.

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

An Illinois woman was shot and killed by her brother-in-law who mistook her for an intruder on Christmas morning, according ...

In Washington state, 20 big cats, including a tiger, died from bird flu in just the past month, according to the facility’s ...