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

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

A backyard flock in Vermont was sickened with H5N1, agricultural officials said on Thursday, following other reports of bird ...

Northwest Naturals says a batch of Feline Turkey Recipe tested positive for bird flu. One cat has died in connection with the ...

The ongoing spread of bird flu in the United States has alarmed experts -- not just because of human cases causing severe ...

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

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

Scientists are issuing warnings after a bird flu patient showed mutations that could increase the transmission of the virus.

The Centers for Disease Control and Prevention (CDC) has identified mutations in the H5N1 bird flu virus that may increase ...

The CDC's analysis revealed changes in the hemagglutinin (HA) gene, a critical component for the virus's ability to attach to host cells. The mutations "were not found in virus sequences from poultry ...

The CDC stressed there has been no known transmission of the virus from the Louisiana patient to anyone else. The agency said ...