CHICAGO, USA – The outbreak of bird flu in US dairy cows has now been confirmed in Minnesota and Iowa, bringing to 11 the total number of
This is AI generated summarization, which may have errors. For context, always refer to the full article.CHICAGO, USA – The outbreak of bird flu in US dairy cows has now been confirmed in Minnesota and Iowa, bringing to 11 the total number of affected states, which have been encouraged to ramp up testing efforts at the request of government officials.
Scientists are on alert for changes in the H5N1 virus strain that could signal it is adapting to spread easily among humans. The virus has caused serious or fatal infections among people in close contact with wild birds or poultry and has long been on the list of viruses with pandemic potential. Any expansion to a new mammal species is concerning.
The H5N1 virus that is currently infecting US dairy cattle is from a subtype known as clade 2.3.3.4b. The US Food and Drug Administration has said it detected fragments of the H5N1 virus in about 1 in 5 samples during a national survey of retail milk. US health officials believe people cannot get sick from drinking pasteurized milk but warn not to drink raw unpasteurized milk.It remains unclear how the virus is spreading, but there is evidence of wild bird-to-cow, cow-to-cow, cow-to-poultry, and three cases of cow-to-human transmission. There is no evidence of human-to-human transmission.
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