The recent detection of highly pathogenic avian influenza, commonly known as bird flu, has been confirmed in three additional dairy herds in Michigan counties: Ionia, Isabella, and Ottawa, the Michigan Department of Agriculture and Rural Development said Friday. That brought the total to four affected counties, with Montcalm County the first to detect the disease in a dairy herd about two weeks earlier.
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CDC sequencing of H5N1 patient samples yields new clinical clues
The Centers for Disease Control and Prevention (CDC) last night released a detailed analysis of H5N1 avian flu samples taken from a patient in Texas who was exposed to sick cows, which suggests that the infection might involve the eyes but perhaps not the upper respiratory tract.
Also, when CDC scientists compared the human H5N1 samples to viruses from cattle, wild birds, and poultry, they found in the human sample a mutation with known links to host adaptation.
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Tests confirm avian flu on New Mexico dairy farm; probe finds cats positive
The US Department of Agriculture (USDA) Animal and Plant Health Inspection Service yesterday announced that tests have now confirmed highly pathogenic avian influenza (HPAI) in a New Mexico dairy herd and that the virus has now been confirmed in five more Texas dairy herds.
Part of quickly evolving developments, the announcement came shortly after Texas health officials and the Centers for Disease Control and Prevention (CDC) announced the first human case, which involves a person from Texas who had contact with dairy cattle, highlighting the risk to farm workers.
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Avian flu infects person exposed to sick cows in Texas
Federal and state health officials today reported that a person connected to a dairy farm in Texas has tested positive for H5N1 avian flu, the first known case linked to sick dairy cows and the nation’s second since the virus began circulating in wild bird and poultry in 2022.
Today’s case announcement underscores new interim guidance that the Centers for Disease Control and Prevention (CDC) released over the weekend on preventing, detecting, and responding to avian flu infections in humans, which are very rare and mainly pose a threat to people who are exposed to sick animals or contaminated environments.
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