A new strain of bird flu, the D1.1 variant, has been detected in a dairy worker in Nevada, marking the first human case of ...

That bird flu strain, called D1.1 by scientists, was also linked to a fatal human case in Louisiana last year after exposure to sick birds. The D1.1 strain has emerged in recent months to dominate ...

This strain of bird flu, known as D1.1, has only ever previously been detected in wild birds and poultry, indicating that it has only recently spread to cows. The detection, found in dairy cattle ...

Scientists are closely watching the new infections in Nevada because gene sequences from affected cattle have shown that they are a subtype of the H5N1 virus, D1.1, which has been associated with ...

This version of bird flu, known as D1.1, has only ever previously been detected in wild birds and poultry, indicating that it has now spilled over into cows. The detection, found in dairy cattle ...

The strain, known as D1.1, was detected in Nevada dairy cattle after being the predominant variant in North American birds last fall and winter. The USDA did not clarify the exact number of cows ...