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

Officials didn’t identify the facility but confirmed it’s in Maricopa County and currently under quarantine as a precaution.

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.

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.

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