The patient had mild illness, and there is no evidence that the virus has spread to anyone else. View on euronews

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. The illness was considered mild.

The variant of bird flu that killed a Louisiana resident has now been found in dairy cows. Until now, the human cases of bird flu traced to cattle have been mild, mostly eye infections. But the U.S. Department of Agriculture confirmed that a strain previously found only in wild birds has turned up in dairy herds in Nevada ‒ raising concerns that future human infections could be more serious.

Nevada has confirmed its first human case of bird flu in a farm worker who was exposed to infected dairy cattle, the Central Nevada Health District said on Monday, after authorities last week reported a second strain of the virus in cows in the state.

A second subtype of H5 bird flu, known as D1.1, was detected in dairy cattle and infected one worker in the US state of Nevada. On February 10, 2025, the US Centers for Disease Control and Prevention released data showing the new D1.

Nevada confirms its first human case of bird flu amid a growing U.S. outbreak impacting poultry, wildlife and the price of eggs.