The recent outbreak of highly pathogenic avian influenza (H5N1) has placed a heavy financial burden on the U.S. dairy industry. A Cornell University study revealed that a single herd of infected cows ...

Scientists have known for more than a year that bird flu, H5N1, made the jump from wild birds and common poultry to cows and ...

A recent Cornell University study revealed how the highly pathogenic avian influenza (HPAI) H5N1 strain is harming the U.S. dairy industry. The virus causes severe mastitis in cows, reducing milk ...

5226 A screencap from a video that claims to depict the mass dumping of dead birds that were culled after an outbreak of avian flu at an egg farm in Tonopah, Ariz., in May 2025. [Animal Outlook] ...

While bird flu has been around for decades, the discovery in 2024 that the deadly pathogen spread from a wild bird to a cow came as a surprise to virus watchers, according to news officials.

While bird flu has been around for decades, the discovery in 2024 that the deadly pathogen spread from a wild bird to a cow came as a surprise to virus watchers, according to news officials. In ...

Easy replication in cattle mammary glands means H5N1 bird flu is under no evolutionary pressure to adapt to spread easily in humans.

Knowable Magazine answers questions about how dangerous bird flu is, where it came from, and what key events paved the way for the current outbreak.

The H5N1 bird flu has spread to many different non-avian species in the U.S., some of which are shown here. In domestic poultry, it has caused the deaths of tens of millions of chickens, geese, ducks, ...

How bird flu has devastated one American farm Stray feathers litter the ground inside the empty coop at Kakadoodle Farm. A few beige eggshells crunch underfoot. No hens were left alive.

Dairy producers are increasingly putting internet-connected collars and ear tags on their cows, helping better track the animals’ health and breeding.

A bird that died from unknown causes lays along the Lake Michigan shoreline in Lake County. Lake County health officials said bird flu has been reported in dead birds found across the county. (Joe ...