Federal authorities say it is likely being carried from farm to farm on objects like farm equipment or clothing that has touched a sick cow.

California officials have declared a state of emergency over the spread of bird flu, which is tearing through dairy cows in that state and causing sporadic illnesses in people in the U.S.

Northwest Naturals is recalling a line of its pet food after authorities Oregon linked the death of a cat to a batch contaminated with bird flu.

The California Department of Food and Agriculture has issued a statewide recall of raw milk produced and packaged by Valley Milk Simply Bottled after H5N1 bird flu virus was found in samples from a bulk tank at the company’s dairy farm.

According to the county Department of Public Health in Los Angeles, the recalled products are packaged 2-pound plastic bags with “Best if used by” dates of May 21, 2026, B10 and June 23, 2026, B1. Pet owners were urged to immediately dispose of those products.

A backyard flock in Vermont was sickened with H5N1, agricultural officials said on Thursday, following other reports of bird flu-related animal deaths this month beyond commercial farms and wildlife.

A pet food company recalled a batch of one of its products after the Oregon Department of Agriculture blamed the product on the death of a house cat. The company told consumers in 12 states to throw out the product.