Washington had nine instances of highly pathogenic avian influenza from mid-November through mid-December, though all of those were in backyard flocks and 290 birds were affected, according to USDA ...

SEATTLE — Millions of birds continue to silently fly overhead, making their long seasonal journey south. The autumn bird migration season is in full swing, peaking between September 19 and October 11 ...

An outdoor pet cat tested positive for highly pathogenic avian influenza and later died in Grant County, Wash., after reportedly coming into contact with a dead wild bird.

GRAYS HARBOR COUNTY, Wash. -- A Washington state resident is believed to be the first person to die from a rare strain of bird flu, but state health officials said Friday the risk to the public is low ...

The Washington State Department of Health has announced that H5N5, a bird flu strain that has never been detected in humans globally, led to the death of an older adult on Friday, adding, however, ...

A pet cat has died of avian influenza in Eastern Washington following reports of detection of the disease in wild birds, ...