Two state health departments have issued new guidance on testing for the bird flu, following a CDC advisory, even as it says the risk to the public remains low.

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

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

Live poultry markets in New York City raced to sell off all their chickens and other fowl Friday after seven cases of avian flu were detected and state officials ordered markets in the metropolitan ...

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

As bird flu spread among animals soars in the United States, hospitals are being told to proactively screen for potential human cases in influenza A patients.

By 1957, scientists had a significantly more sophisticated understanding of influenza, worrying them that a pandemic similar ...

Walk into nearly any grocery store at the moment and the price for a dozen eggs may shock you – if any eggs are in stock at ...

Yahoo News provides the latest updates on the spread of bird flu in the U.S., and its effect on rising egg prices and shortages.

Live bird markets in New York City, Long Island, and Westchester will be shut down for a week after seven cases of avian flu ...

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