So far, the virus has not been lethal to cattle and causes very different symptoms than it does in poultry.

Why dairy and not beef?

Several factors favour bovine influenza A detection on dairy versus beef farms

Recent detection in the United States of a highly pathogenic H5N1 avian influenza  virus in dairy cattle is the first instance of this strain in bovines.  The World Organization for Animal […] Read more






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Explainer: Avian flu in dairy cows warrants close attention

Farmers should identify unusual signs of disease in cattle and have them examined by a veterinarian

An emerging disease syndrome was originally identified in dairy cows in Texas. These cows were identified by animal care workers and veterinarians as having the main clinical signs of reduced milk production and decreased feed intake. Approximately 10 per cent of the cows seem to show clinical signs on affected farms. No deaths occurred and cows seemed to recover with supportive care within two to three weeks. However, loss of milk production was significant. These same farms reported deceased wild birds on their properties.

FILE PHOTO: Test tubes labelled “Bird Flu” and eggs are seen in this picture illustration, January 14, 2023. REUTERS/Dado Ruvic/Illustration/File Photo

Bird flu hits Texas dairy cows, hens, human as ducks migrate

[Change management: career change] Outbreak may have started a month ago after mysterious illness affected 40 per cent of Texas dairy cattle

Migratory waterfowl are to blame for widening avian-flu outbreaks in Texas cows and poultry, and wild birds carrying the virus should be heading north soon, state Agriculture Commissioner Sid Miller said.

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Dairy bird flu cases creep closer to Canada

Michigan and Idaho become fourth and fifth state to confirm virus in dairy cattle

Idaho has become the newest U.S. states to identify highly pathogenic avian influenza (HPAI) in a dairy cattle operation, the Idaho State Department of Agriculture (IDSA) confirmed March 30.