The different strain, D1.1, was recently found in cattle for the first time. Bird flu is continuing to spread across the U.S., and experts say they are "concerned" as public health officials ...

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 H5N1 avian influenza in the state. While the infection generally leads to ...

The worker was exposed while working with infected dairy cattle when he contracted the D1.1 genotype bird flu strain. What is the new bird flu strain? According to the U.S. Department of ...

A dairy worker in Nevada has been infected with a strain of H5N1 bird flu—genotype D1.1—that has newly spilled over to cows, the Centers for Disease Control and Prevention has confirmed.