Jan 31, 2025 · A multistate outbreak of HPAI A(H5N1) bird flu in dairy cows was first reported on March 25, 2024. This is the first time that these bird flu viruses had been found in cows. In the United States, since 2022, USDA APHIS has reported HPAI A(H5N1) virus detections in more than 200 mammals.

13 hours ago · The variant of bird flu that killed a Louisiana resident has now been found in dairy cows. Until now, the human cases of bird flu traced to cattle have been mild, mostly eye infections.

1 day ago · A variant of H5N1 bird flu that has circulated widely in wild birds — and in several instances led to severe illness in humans — has turned up in dairy cattle for the first time.. The findings ...

2 days ago · A second type of bird flu has been found in U.S. dairy cows for the first time, the U.S. Department of Agriculture (USDA) announced on Wednesday. Until recently, all dairy herd detections in the U ...

2 days ago · Six dairy herds in Nevada have tested positive for a newer variant of the H5N1 bird flu virus that’s been associated with severe infections in humans, according to the Nevada Department of ...

1 day ago · Dairy cattle in Nevada have been infected with a new type of bird flu that’s different from the version that has spread in U.S. herds since last year, Agriculture Department officials said Wednesday.. The detection indicates that distinct forms of the virus known as Type A H5N1 have spilled over from wild birds into cattle at least twice.

4 days ago · Lactating cows have been most highly affected, and signs of illness have been reported in less than 10% of cows within a herd. While avian influenza virus type A (H5N1) is associated with high morbidity and mortality in birds ("highly pathogenic"), this hasn't been the case for dairy cattle.

1 day ago · Dairy cows in Nevada have been infected with a new form of bird flu that is distinct from the version that has been spreading through herds over the last year, the U.S. Department of Agriculture ...

Apr 8, 2024 · The H5N1 strain of avian influenza has been found in dairy cows, raising concerns among scientists about what the spillover could mean for humans—and whether the virus has pandemic potential.

18 hours ago · A new H5N1 bird flu strain, D1.1, has been detected in dairy cows in Nevada, marking the second instance of the virus jumping from birds to cattle. This challenges previous assumptions that such ...