Cows Have Been Infected With a Second Form of Bird Flu
The finding indicates that the virus, known as H5N1, has spilled from birds into cows at least twice — leading to these two sets of infections — and that it could continue to do so. It also suggests that the virus may pose a persistent risk to cows and to the people who work closely with them.
"The only testing mandated for cows by USDA occurs when cows cross state lines. Otherwise, guidelines exist for states to test milk and herds. The true extent of virus circulation in cows ...
Late last year, the USDA issued a federal order that all raw milk samples nationwide be collected and shared with the agency in order to test for bird flu. FILE - Cows stand in the milking parlor ...
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