Bird Flu Spreads to Dairy Cows Across Multiple States

Highly pathogenic avian influenza has spread to dairy herds in Michigan and Idaho, with presumptive positive test results also reported in New Mexico, Texas, and Idaho. The virus strain appears to have been introduced by wild birds, and there is concern it may have spread to Europe as well. However, initial testing hasn't found changes to the virus that would make it more transmissible to humans, and there's no concern about the safety of the commercial milk supply.