A bird flu variant linked to the death of a Louisiana resident has now been found in cattle in Nevada.

Dairy herds in Nevada have been infected by a version of the H5N1 bird flu not previously seen in cows, putting virologists on high alert.

At the start of 2025, health officials in Louisiana reported the first U.S. bird flu death and experts questioned whether highly pathogenic avian influenza A (H5N1) could lead to the next pandemic. A ...