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.

4 天之前 · Six dairy herds in Nevada have tested positive for a newer variant of the H5N1 bird flu virus that’s been associated with severe infections in humans, according to the Nevada Department of ...

9 小时之前 · Scientists are closely watching the new infections in Nevada because gene sequences from affected cattle have shown that they are a subtype of the H5N1 virus, D1.1, which has been associated with ...

3 天之前 · The variant of H5N1 bird flu has been circulating in wild birds, but this is the first time it's been detected in cattle. ... The detection of the variant in Nevada marks one of the few new pieces ...

2 天之前 · This confirmation was a result of state tracing and investigation, following an initial detection on silo testing under USDA’s National Milk Testing Strategy (NMTS) in Nevada. This is the first detection of this virus genotype in dairy cattle (all previous detections in dairy cattle have been HPAI H5N1 clade 2.3.4.4b, genotype B3.13).

3 天之前 · The new Nevada dairy infections were first detected through milk testing conducted on January 31, ... The spread of H5N1 bird flu in dairy cows is unprecedented; the US outbreak is the first of ...

3 天之前 · A few days ago, APHIS reported four recent H5N1 detections in Nevada dairy herds, the state's first since December. Nevada officials said they were removing large nuisance populations of European starlings to curb the spread of the virus. The non-native species typically migrate through Nevada in the winter and outcompete local birds and pose a ...

5 天之前 · Nevada reported its first H5N1 detection in dairy cows in early December 2024, which affected a herd in Nye County, located northwest of Las Vegas. In two recent statements, the Nevada Department of Agriculture (NDA) said the virus had been detected in dairy cattle in Churchill County , which borders Nye County to the northwest.

3 天之前 · A new version of the H5N1 bird flu virus has been detected in milk samples collected from dairy herds in Nevada. The strain, known as D1.1, had so far been associated only with migrating birds and ...

2024年12月6日 · The Nevada Department of Agriculture (NDA) has received evidence of a detection of Highly Pathogenic Avian Influenza (H5N1) in dairy cattle in Nye County. The affected premises has been quarantined and mandatory testing will occur onsite at regular intervals until the herd is confirmed to be virus-free.