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 ...

A newly identified strain of H5N1 bird flu has been confirmed in dairy cattle in Nevada, marking the second known spillover ...

A new variant of H5N1 bird flu, known as D1.1, has been detected in dairy cattle in Nevada. This marks the first time this ...

A highly pathogenic H5N1 virus has been circulating in wild birds in North America since late 2021, causing sporadic ...