NEW YORK: Bird flu has infected a dairy herd in Ohio for the first time and was detected in additional herds in Kansas and New Mexico, according to the United States (US) government, expanding an outbreak in cows that has heightened concerns about possible risks to humans.
The US Department of Agriculture (USDA) has confirmed infections in herds across six states since it first reported cases in Texas and Kansas on March 25.
The infected dairy in Ohio received cows on March 8 from a Texas dairy, which later confirmed a detection of bird flu, the Ohio Department of Agriculture said. The USDA has said transmission of the disease between cows cannot be ruled out.
The initial cases in Texas and Kansas appear to have been introduced by wild birds, and the strain of the virus in subsequent cases in New Mexico, Michigan and Idaho was very similar, according to USDA. Migratory birds have spread bird flu around the globe since 2022, infecting poultry and other species.
“In the state of Kansas, all the genetic sequencing data that we can come up with is still indicating it is a spillover event from a wild bird exposure,” Kansas Animal Health Commissioner Justin Smith said in an interview on Thursday.
The spread to an increasing number of species and its widening geographic reach have raised the risks of humans being infected, the head of the World Organization for Animal Health said on Thursday.
