APHIS Confirms D1.1 Genotype in Dairy Cattle in Nevada
On January 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 2.3.4.4b, genotype D1.1 in dairy cattle.
New Strain of Bird Flu in Nevada Reveals a Concerning Mutation
2 days ago · D1.1 is the "current predominant genotype in migratory wild birds", according to the USDA, and it is responsible for a few serious human cases of highly pathogenic avian influenza (HPAI). These include a near-fatal case involving a teen in Canada and the first and only human death related to bird flu in North America thus far, involving a person over the …
New strain of bird flu is detected in a Nevada dairy worker, CDC …
1 day ago · The newer version, known as D1.1, was confirmed in Nevada cattle on Jan. 31. It was found in milk collected as part of a monitoring program started in December. ... The D1.1 version of the virus ...
H5N1 bird flu: Nevada dairy worker infected with newly spilled …
9 hours ago · The bird flu strain H5N1 clade 2.3.4.4b, genotype D1.1 is the predominant strain currently circulating in wild birds in North America and was confirmed for the first time in cows in Nevada last ...
On January 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 2.3.4.4b, genotype D1.1 in dairy cattle.
BREAKING: New D1.1 H5N1 Strain Detected in Nevada Dairy …
A new strain of bird flu, D1.1, has been found in four Nevada dairy herds, marking the first time it’s been confirmed in cattle. Unlike the milder B3.13 strain, D1.1 causes severe illness and has significantly increased egg prices by 47%, along with dairy …
Cows infected by lethal bird flu strain never before seen in the …
6 days ago · At least four cattle herds in Nevada have tested positive for a strain of H5N1 bird flu never before seen in cows, state agriculture officials confirmed Wednesday, and respiratory symptoms like...
USDA Confirms New Strain of Bird Flu in Nevada Dairy Cattle
5 days ago · APHIS used whole genome sequencing to confirm HPAI H5N1 clade 2.3.4.4b, genotype D1.1. This confirmation was a result of state tracing and investigation, following an initial detection on silo testing under the USDA’s National Milk Testing Strategy (NMTS) in Nevada.
New strain of bird flu detected in Nevada dairy cows
6 days ago · The Animal and Plant Health Inspection Service National Veterinary Services Laboratories confirmed by whole genome sequence the first detection of highly pathogenic avian influenza H5N1 clade 2.3.4.4b, genotype D1.1 in dairy cattle.
APHIS confirms D1.1 genotype in dairy cattle in Nevada
6 days ago · Genotype D1.1 represents the predominant genotype in the North American flyways this past fall and winter and has been identified in wild birds, mammals, and spillovers into domestic poultry. The detection does not change USDA’s HPAI eradication strategy and is a testament to the strength of our National Milk Testing Strategy (NTMS).
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