USDA confirms spillover of 2nd H5N1 avian flu genotype into dairy cattle
Until now, all dairy herd H5N1 detections have involved the B3.13 genotype, thought to be the result of a single spillover from wild birds in late 2023 or early 2024. The genotype has been linked to mild infections in dairy workers, along with some poultry cullers, with conjunctivitis the main symptom.
USDA confirms Nevada dairy cows infected with 2nd strain of bird flu
On Jan. 31, 2025, the USDA Animal and Plant Health Inspection Service (APHIS) National Veterinary Services Laboratories (NVSL) confirmed by whole genome sequence the first detection of highly pathogenic avian influenza (HPAI) H5N1 clade 2.
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Avian influenza detected in Nevada dairy cattleScientists have detected a highly pathogenic type of avian influenza in Nevada dairy cattle, the U.S. Department of ...
Nearly 119,000 birds have been culled at a farm in California after a bird flu called H5N9 was detected among the poultry ...
This is the fifth commercial poultry flock in Maryland to be struck by HPAI in 2025, all of which have involved commercial ...
At least four cattle herds in Nevada have tested positive for a strain of H5N1 bird flu never before seen in cows, state ...
Poultry producers who have previously had flocks infected with highly pathogenic avian influenza would ... by the current outbreak of the flu. The APHIS interim rule went into effect Dec. 31 ...
The United States Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) reported that on ...
The Indiana Department of Natural Resources (DNR) confirmed highly pathogenic avian influenza (HPAI) as the cause of death in waterfowl in Gibson County in December and suspects HPAI as the cause of ...
In December more than 100,000 birds, nearly all of them chickens, were killed at the Cullman County farm and a backyard flock ...
The US Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) today confirmed H5N1 avian flu ...
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