A new strain of bird flu (highly pathogenic avian influenza, or HPAI) has been detected on a duck farm in California. The World Organisation for Animal Health (WOAH) reported the outbreak of the new ...

H5N9 is a rare subtype of the influenza A virus that can cause highly pathogenic avian influenza (HPAI), also known as bird flu. It's a reassortment strain that originated from the H5N1, H7N9, and ...

The United States has reported its first outbreak of H5N9 bird flu in poultry on a duck farm in California, the World Organization for Animal Health (WOAH) said on Monday. U.S. authorities also ...

H5N9 is “not commonly seen in poultry in general,” says Eman Anis, assistant professor at the University of Pennsylvania School of Veterinary Medicine. (Anis is part of a lab that conducts national ...

according to the World Organisation for Animal Health (WOAH). Health officials also detected a more common H5N1 strain of bird flu on the same farm which is located in Merced County, California.

"This is the first confirmed case of HPAI H5N9 in poultry in the United States," the U.S. Department of Agriculture said in the report to the WOAH. As the outbreak was reported, California state ...

The first U.S. H5N9 outbreak has raised concerns as scientists warn of evolving bird flu risks—here's what you need to know about the symptoms.

The outbreak occurred in a flock of commercial ducks in California, the epicenter of the bird flu crisis, according to a report from the World Organisation for Animal Health (WOAH). "This is bad ...