A shift in the H5N1 virus has allowed it to spread more easily from birds to cows, raising concerns about its evolution.

A version of the H5N1 virus that has killed one person and severely sickened another has been detected in milk samples ...

The USDA said four Nevada dairy herds were infected with an H5N1 bird flu strain that has circulated in wild birds, making ...

Six dairy herds in Nevada have tested positive for a newer strain of the H5N1 bird flu virus that’s been associated with ...

At least four cattle herds in Nevada have tested positive for a strain of H5N1 bird flu never before seen in cows, state ...

A new strain of the H5N1 bird flu virus has been detected in milk samples collected from dairy cows in Nevada.

Until now, all dairy herd H5N1 detections have involved the B3.13 genotype, thought to be the result of a single spillover ...

The strain of bird flu is distinct from what has previously been found in dairy cattle. The finding means the virus has again ...

A strain of the H5N1 bird flu virus that has typically spread in poultry and wild birds recently jumped to dairy cattle in ...

U.S. dairy cattle tested positive for a strain of bird flu that previously had not been seen in cows, the U.S. Department of ...

The new H5N1 version, known as D1.1, was found in dairy cattle in Nevada and is different than the B3.13 type that has spread ...

Dairy cattle in Nevada have been infected with a new type of bird flu that’s different from the version that has spread in ...