Second bird flu strain found in US dairy cattle, USDA says
- A strain of the H5N1 bird flu virus recently jumped from poultry and wild birds to dairy cattle in Nevada, marking the first time the D1.1 variant has infected cows.
- The USDA detected the bird flu strain in milk collected from a silo last year, but did not specify the number of cows infected.
- While the risk to public health remains low, officials warn against consuming raw milk due to lack of data on human transmission, though pasteurized milk is considered safe.
203 Articles
203 Articles

Dairy cows infected with 2nd form of bird flu for the 1st time: USDA
Herd of cows eating hay in a dairy farm. (STOCK PHOTO/Adobe Stock) (NEW YORK) — A second type of bird flu has been found in dairy cows for the first time, the U.S. Department of Agriculture announced on Wednesday. Until recently, all dairy herd detections in the U.S. had involved a form of bird flu, or avian influenza, known as B3.13. This strain of bird flu, known as D1.1, has only ever previously been detected in wild birds and poultry, indica…
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