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.

2 days ago · 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 ...

1 day ago · The variant of H5N1 bird flu has been circulating in wild birds, but this is the first time it's been detected in cattle. ... which traced the new variant back to dairy herds in Nevada.

1 day ago · 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 ...

BREAKING: Nevada dairy herds confirm first cases of highly pathogenic H5N1 D1.1 strain in cattle, linked to severe human illness and poultry deaths. While the milder B3.13 strain has infected 1,000+ herds since 2023, D1.1’s emergence triggers 30-50% milk losses, rising egg prices, and urgent biosecurity upgrades amid CDC’s “low risk” assessment. Summary: A new …

3 days ago · 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.

1 day ago · A version of the H5N1 bird flu virus known as B3.13 was confirmed in March after being introduced to cattle in late 2023, scientists said. It has infected more than 950 herds in 16 states.

1 day ago · 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 ...