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 ...

A new bird flu (highly pathogenic avian influenza) outbreak has been discovered in California. The newly reported H5N9 strain was found Monday at a duck farm in Merced County, California, according to ...

This H5N9 outbreak occurred on a duck farm in Merced, California, and has been reported to the World Organisation for Animal Health. While H5N9 has been found in poultry before, this is the first ...

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 ...

As California’s Central Valley makes headlines for the growing ... Vohra explains what we know about bird flu, both the H5N1 and H5N9 variants, and the precautions we can take to prevent it from ...

New strain of bird flu detected in California as H5N9 detected on a duck farm in Merced County, California, David Murray ...

Some experts suspect that H5N9 may have emerged among the ducks in California due to genetic reassortment occurring between circulating H5N1 viruses and other flu viruses containing the N9 protein ...

California. The H5N9 strain has been detected before in North America among wild birds over the past two years. The strain was even detected in turkeys in Wisconsin in the 1960s, the earliest ...

H5N9 has been seen in the past, Cennimo noted, and generally causes mild illness in birds. "The ducks in California, however, were dying," he said. "Genetic testing showed this H5N9 was different ...

There has not been a confirmed case of human bird flu in Tulare County since Dec. 10, according to the Tulare County Health & ...

Health officials found H5N9 on a duck farm in Merced County, California, where the more common strain of the virus was also detected. Nearly 119,000 birds exposed to the virus have been killed ...

The Trump administration would do well to follow the lead of Maryland, which is taking decisive action to stop the spread of ...