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.

Arizona agricultural officials say they now have the first detection of H5N1 avian influenza in milk produced by a dairy herd ...

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Kaylee Rickly said the mom had "her hands full" with a calf who wasted no time showing how much energy and excitement he had.

Three dairy veterinarians, including one who worked only in states with no known bird flu outbreaks in cows, had recent, ...

Until last week, all bird flu in dairy herds had been identified as the B3.13 variant, which was believed to have come from ...

“I always thought one bird-to-cow transmission was a very rare event ... according to USDA. It was detected in milk collected as part of a surveillance program launched in December. “Now we know why ...

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