Another spillover of the H5N1 bird flu virus from wild birds to dairy cattle appears to have occurred, this time in Arizona.

A sample of milk from a herd of dairy cows in Maricopa County has tested positive for H5N1 avian influenza, or bird flu, according to the Arizona Department of Agriculture.

Bird flu was recently detected in milk produced by an Arizona dairy herd for the first time, officials announced Friday.

Milk from every dairy in Arizona has been tested for avian flu at least once since January, but this week was the first time a test turned up positive.

Health officials have confirmed that bird flu has been detected in milk from a cattle herd at a Phoenix-area dairy facility.

With threats of avian flu and lead poisoning, biologists are working overtime to care for a species that nearly went extinct.

Bird flu is forcing farmers in Arizona and beyond to euthanize millions of laying hens and driving up egg prices. Experts say ...

Researchers analyzed saliva the nocturnal mammals leave behind when sipping nectar from plants and residential hummingbird ...

A University of Arizona researcher is trying to work out the possibility that bird flu might easily spread to us.

Nevada just confirmed its first human case of avian flu from infected cattle. Nevada’s first case was found in Churchill County, the Central Nevada Health District announced on Monday. The infected ...