A version of the H5N1 bird flu virus known as B3.13 was confirmed in March after being introduced to cattle in late 2023, scientists said. It has infected more than 950 herds in 16 states.

Since March 2024, H5N1 avian influenza has been detected in 957 herds in 16 states, according to the USDA.

On Wednesday, United States Department of Agriculture officials confirmed a new strain of bird flu in U.S. dairy cattle for the first time, identified through genome sequencing of milk from Nevada.

The newer variant of avian influenza that recently infected dairy cattle in Nevada has a genetic change that’s thought to help the virus copy itself in mammals — including humans — more ...

Throughout the ongoing bird flu epidemic, most animals and people have been infected with the genotype B3.13. However, these cattle have been infected with genotype D1.1.

The disclosure that dairy herds in Nevada have been infected by a version of the H5N1 bird flu not previously seen in cows has put virologists and researchers on high alert. Among other things ...

A dairy worker in Nevada was infected with a new type of bird flu that’s different from the version that has been spreading in U.S. herds since last year, federal health officials said Monday.

Avian flu reaches cattle in Nevada's Nye County Dairy cows stand in a field outside of a milking barn at the U.S. Department of Agriculture's National Animal Disease Center research facility in ...

The newer variant of avian influenza that recently infected dairy cattle in Nevada has a genetic change that’s thought to help the virus copy itself in mammals — including humans — more ...

By Brenda Goodman, CNN (CNN) — 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 ...

The strain had previously been found only in birds and people. Most bird flu infections in dairy cattle in the US have been the B3.13 variant, or what’s become known as the “cattle clade.” ...

Wind Advisory from FRI 1:00 PM CDT until SAT 4:00 AM CDT New bird flu infections in Nevada dairy cattle signal the virus may be here to stay By Brenda Goodman, CNN Feb 5, 2025 Updated Feb 6, 2025 0 ...