Bosnia has reported an outbreak of highly pathogenic H5N1 avian influenza, the World Organisation for Animal Health said on Tuesday, as a seasonal wave of the disease known as bird flu continues in Europe.

Nevada reported its first human case of bird flu in a farm worker exposed to infected dairy cattle, marking an extension of the U.S. outbreak. The worker is recovering, and authorities state no person-to-person spread has been observed.

Poultry flocks infected with bird flu are culled to prevent the spread of the virus whereas culling wild birds is generally not feasible, contrary to posts online that suggest only domesticated birds are being killed in order to manipulate U.

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.

Biosecurity measures to protect against bird flu are in place at the entrance to Josh Burkholder’s The Egg Basket in Macedonia, Ill. on Monday, Feb. 10, 2025. Burkholder raises two

H5N1 bird flu is branching out. New data from the Centers for Disease Control and Prevention indicates that a second type of H5N1 has likely spread from dairy The