The discovery of bird flu in the San Mateo backyard flock prompted health officials to remind people to take biosecurity ...

After bird flu was detected in a stray cat in Half Moon Bay this week, health officials in San Mateo County are urging pet ...

A second type of bird flu has been found in U.S. dairy cows for the first time, the U.S. Department of Agriculture announced Wednesday.

Tools used to contain previous bird flu outbreaks aren’t working this time, experts say. Since March, the virus has sickened at least 67 people in the U.S. and killed one, with egg producers begging ...

Among several more outbreaks on commercial farms, one was at a layer facility in Pennsylvania that has nearly 2 million birds ...

Bird flu is widespread in wild birds worldwide and is causing outbreaks in poultry and dairy cows with several recent human cases.

Pennsylvania's first confirmed case of avian flu in 2025 in domestic poultry was reported in a 50,000-bird flock on a Lehigh ...

While the risk to humans of exposure from cows or milk remains low, this new flu spillover from birds into cows raises the need for continued surveillance.

UC San Francisco's Rais Vohra, MD, explains recent increase in reported virus infections and the risks of consuming raw cow’s milk.

While it's tragic and alarming to see a massive die-off, it's not uncommon for birds that travel in such large populations.

In the relatively few U.S. cases of human bird flu so far recorded, symptoms have typically been mild -- congestion, pink eye ...

Bird flu, also known as H5N1, continues to spread among U.S. livestock, driving up egg prices and worrying public health experts.