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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 ...
State and federal officials have identified new cases of avian influenza at three Central Valley dairies as the number of infected cows continues to climb in California. Highly pathogenic avian ...
California has been looking for bird flu in large milk tanks during processing. And they have found the virus in at least 650 herds, representing about three-quarters of all affected U.S. dairy herds. The virus was recently detected in Southern California dairy farms after being found in the state’s Central Valley since August.
Bird flu was first detected in Texas dairies in the spring after officials believe one herd was infected by wild birds. So far, 16 states have had outbreaks in cows, with 865 herds affected.
On July 31, a study found 2 farmworkers who had not been tested for bird flu had antibodies against it. [89] On August 9, the Colorado Department of Public Health reported bird flu in domestic cats, including indoor-only cats. [90] In late August, H5N1 had spread to dairy cow herds in California. [91]
Dairy industry experts say the virus entered California after local cows were shipped to another state and then returned to California.
California has been looking for bird flu in large milk tanks during processing. And they have found the virus it at least 650 herds, representing about three-quarters of all affected U.S. dairy herds. The virus was recently detected in Southern California dairy farms after being found in the state’s Central Valley since August.
Avian influenza, also known as avian flu or bird flu, is a disease caused by the influenza A virus, which primarily affects birds but can sometimes affect mammals including humans. [1] Wild aquatic birds are the primary host of the influenza A virus, which is enzootic (continually present) in many bird populations.