This version of the virus is circulating broadly in wild birds and is different from the virus that has been causing dairy cow outbreaks since early 2024, the CDC said. A Nevada dairy worker was infected with a version of bird flu that is known to have killed one person in the United States and severely sickened a teen in Canada, state and federal health authorities said Monday.
This version of the virus was detected for the first time in dairy farms last month in Nevada. The Central Nevada Health District said Monday that an adult was exposed to infected dairy cattle while working at a farm in the northwestern part of the state. The Centers for Disease Control and Prevention said its genetic analysis confirmed that the virus in the Nevada person is the same as was detected in the Nevada dairy cows.