The United States has reported its first outbreak of H5N9 bird flu in poultry on a duck farm in California, the World Organisation for Animal Health (WOAH) said on Monday. U.S. authorities also detected the more common H5N1 strain on the same farm in Merced County,

Customers in Louisiana and nationwide are dealing with egg prices going up and sparsely populated aisles at the grocery store following the spread of the bird flu in the U.S.

F lu season is upon us and it's not just restricted to humans. Highly pathogenic avian influenza (HPAI), also known as avian influenza or bird flu, is a spreadable virus that affects wild birds, poultry, livestock, pets and, in rare cases, humans.

Avian flu is rampant in poultry farms and in wild birds in the U.S. Every mutation brings the virus one step closer to the brink of human-to-human transmission, but predicting whether a virus will cross that threshold remains an uncertain science.

Highly pathogenic avian influenza, or HPAI, is beginning to spread in parts of Missouri. As a result, the Missouri Department of Agriculture has suspended all poultry and waterfowl auctions, shows, and swap meets in counties that are impacted by HPAI.

The United States is facing a significant public health crisis as a surging avian influenza outbreak wreaks havoc on poultry populations, drives egg prices to record highs, and spreads to humans

The US Department of Health and Human Services awarded Moderna $590 million to continue developing a vaccine to protect against bird flu.

The UK Health Security Agency (UKHSA) has confirmed a case of influenza A(H5N1) in a person in the West Midlands region.

The first human death caused by H5N1 in the U.S. was reported in Louisiana on Jan. 6. Here's what to know about bird flu.

Bird flu was first detected in domestic birds in 1996 in Southern China and has since spread to wild birds, mammals, and humans worldwide, with a fatality rate reaching 50% in some cases. In the U.S., cases have been mostly mild, affecting primarily poultry and dairy workers, until this recent death in Louisiana.

A Long Island farm said it would be forced to kill its flock of nearly 100,000 ducks due to an outbreak of bird flu.

"Cats (domestic and large felids) in particular can experience severe illness or death from infection with H5N1. Dogs can also contract H5N1, although they usually exhibit mild clinical signs and low mortality compared to cats," the FDA said in a news release.