California officials have declared a state of emergency over the spread of bird flu, which is tearing through dairy cows in ...

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.

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.

This month the California Gov. Gavin Newsom declared a state of emergency after epidemiologists confirmed the spread of bird ...

As California declares a state of emergency over bird flu, here is what scientists are saying about the dangers of the virus.

The bird flu outbreak has spread to all 50 states, infecting dairy cattle, poultry farms and 61 humans across the country.

Gov. Gavin Newsom’s declaration has riled up concern, particularly in other top dairy-producing states, such as Wisconsin and ...

California Gov. Gavin Newsom declared a public health emergency on Wednesday as bird flu continues to spread among the ...

Gov. Gavin Newsom said he declared the state of emergency to better position state staff and supplies to respond to the outbreak. California has been looking for bird flu in large milk tanks ...

which can spread a host of germs in addition to bird flu. The U.S. Agriculture Department has stepped up testing of raw milk across the country to help detect and contain the outbreak. A federal ...