USDA confirms bird flu case in Wisconsin dairy herd as new wildlife spillover USDA confirms bird flu case in Wisconsin dairy herd as new wildlife spillover
SUNDAY, DECEMBER 21, 2025
The US Department of Agriculture (USDA )has confirmed a fresh case of highly pathogenic bird flu in a dairy herd in Wisconsin, saying it appears to be a new “spillover” from wildlife into cattle rather than part of earlier dairy outbreaks.