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Current H5N1 Bird Flu Situation in Dairy Cows
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May 9, 2024
[PDF-1.46 MB]
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Description:A multi-state outbreak of HPAI A(H5N1) bird flu in dairy cows was first reported on March 25, 2024. This is the first time that these bird flu viruses were found in cattle. CDC confirmed one human HPAI A(H5N1) infection that had exposure to dairy cattle in Texas that were presumed to be infected with the virus. While thought to be rare, this exposure to HPAI A(H5N1) bird flu virus is the first instance of likely mammal to human transmission.
In the United States, since 2022, USDA APHIS has reported HPAI A(H5N1) virus detections in more than 200 mammals.
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Content Notes:Domestic Summary -- Background -- Global Summary -- Risk to Humans -- Other Documented Mammalian Infections.
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