The newly reported H5N9 strain was found Monday at a duck farm in Merced County, California, according to the World ...

The California duck farm's strain of H5N9 is different from those earlier cases because this time it is closely related to a ...

San Mateo County public health officials reported finding H5N1 bird flu in a pet cat and a backyard poultry flock.

A new strain of bird flu has been detected on a duck farm in California. The World Organisation for Animal Health reported ...

Most of the bird flu cases reported so far in the U.S. have belonged to an influenza subtype known as HPAI H5N1. The newly ...

First U.S. detection of virulent H5N9 strain, at a California duck farm, draws scrutiny as evidence of genetic reassortment ...

H5N9 is “not commonly seen in poultry in general,” says Eman Anis, assistant professor at the University of Pennsylvania ...

New York has ordered a weeklong shutdown of all live bird markets in New York City, Westchester and Long Island after seven ...

In San Mateo County, California, bird flu has now been detected in a cat. This comes after the county recently confirmed the presence of a bird flu in a backyard poultry flock. The county says they ...

Chickens and turkeys at commercial poultry operations likely became infected with bird flu through contact with migrating ...

Wisconsin is among 10 states to report human cases of the H5N1 virus so far, with more than half reported in California.