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

A decade-old bird flu strain, H5N9, has surfaced in US poultry for the first time, detected in a California duck farm.

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

Nearly 119,000 birds have been culled at a farm in California after a bird flu called H5N9 was detected among the poultry.

US officials are investigating the appearance of a strain of bird flu identified in the US for the first time, a worrying ...

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 ...

Bird flu infections around the U.S. have forced mass cullings and resulted in the deaths of zoo animals and pets ...

Earlier this week, the United States reported its first outbreak of H5N9 bird flu in poultry on a duck farm in California ... of avian influenza viruses spreading to humans.

The H5N9 strain of avian influenza is much more rare than the H5N1 which has been responsible for most of the reported human ...

A new strain of H5N9 bird flu was detected at a commercial duck operation in California's Merced County. All the ducks were ...

Detected on a duck farm in Merced ... becomes widespread in humans, scientists would likely have to start from the beginning with developing vaccines and researching the virus, Kinch said.