A 13-year-old girl in Canada became so sick with H5N1, or bird flu, in late 2024 that she had to be put on a ventilator.

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 virus has spread among dairy cattle, humans and other mammals. But officials say the current public health risk is low.

The US hasn’t learned lessons from the Covid-19 pandemic that it could use to mitigate the threat of pathogens like H5N1 bird ...

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

As bird flu infections rise in dairy cattle and chickens, human cases are ticking up too, leaving many people to wonder ...

The first 'severe' human case of bird flu has many around the country concerned, but those in New Jersey may not need to feel too alarmed as no human cases have been reported in the Garden State ...

Bird flu infections are rare in people ... 1999 – Two children in Hong Kong are infected by the H9N2 strain. February 2003 – Eighty-four people in the Netherlands are affected by the H7N7 ...

California officials have declared a state of emergency over the spread of bird flu, which is tearing through dairy cows in that state and causing sporadic illnesses in people in the U.S. That ...

As bird flu infections rise in dairy cattle and chickens, human cases are ticking up too, leaving many people to wonder ...

Gov. Gavin Newsom’s state of emergency declaration on Wednesday due to bird flu has raised questions about the H5N1 virus, including how it spreads. There are 61 confirmed human cases of bird ...