Testers have discovered a second bird flu variation in American dairy cows for the first time.  The Department of Agriculture announced the new strain on Wednesday, Feb. 5. Until recently, all dairy herd detections in the U.S. had been infected with a form of bird flu known as B3.13.
U.S.

New bird flu variation found in US dairy cattle

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New D1.1 bird flu strain detected in US dairy cows, previously found in wild birds and poultry, raises human health concerns.

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