Bird flu virus has swept through farms across the nation’s largest dairy producing state. All human cases had been mild - until now.

California officials have documented bird flu in 645 dairy herds—311 dairies in just the last 30 days. The virus has killed more than 123 million birds in the U.S. since 2022, most of them in commercial poultry operations. The Louisiana case serves as a ...

California Gov. Gavin Newsom issued an emergency proclamation on Wednesday in response to growing concerns over bird flu cases in the state and across the country. The State of Emergency proclamation comes after more bird flu cases were detected in Southern California dairy cows,