The California duck farm's strain of H5N9 is different from those earlier cases because this time it is closely related to a newer variant of the H5N1 virus. That variant is called H5N1 D1.1, the USDA ...

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 ...

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.

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 strain of bird flu has been detected on a duck farm in California. The World Organisation for Animal Health reported the outbreak of the new strain, H5N9, earlier this week.

Poultry flocks infected with bird flu are culled to prevent the spread of the virus whereas culling wild birds is generally ...

We talked to experts about where the science is on risks to humans and how the virus is messing with the food supply.

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

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

H5N9 has the potential to be more virulent for birds and other farm animals, but it is important to know that it does not pose any greater risk to humans, says Rais Vohra, MD, professor at UC San ...

In a troubling development, the highly pathogenic H5N9 avian flu has been detected in U.S. poultry for the first time. The outbreak occurred at a duck meat farm in Merced County, California ...