Health officials are making a renewed call for vigilance against bird flu, but some experts are puzzling over why reports of new human cases have stopped.

Seventy people, mostly farm workers, have contracted the virus since 2024, and further spread raises the risk that bird flu could become more transmissible to humans, experts say.

She recently released a paper reviewing bird flu in infections in cats between 2004 and 2024. Barn cats that died after drinking raw milk were one of the first signs that dairy cows were becoming ...

Bird flu has also been causing outbreaks in poultry, leading to human cases among U.S. poultry farm workers and culling operations workers. Three human cases have had no known or identifiable ...

The H5N1 bird flu has been spreading widely among wild birds, poultry and other animals around the world for several years, and starting early last year became a problem in people and cows in the U.S.