China´s Scientists Make Breakthrough on How H5N1 Influenza Occurred in the U.S.    
submitted by kickingbird at Jul, 9, 2025 from CASAD
Chinese scientists have found out how the H5N1 virus initially invades the mammary glands of dairy cattle and may have triggered the outbreak of H5N1 avian influenza across over 1,000 dairy farms in the ...

USDA: APHIS Updates Guidance on the Interstate Movement of Lactating Dairy Cattle    
submitted by kickingbird at 6 hours ago from USDA
Cattle Moving Interstate From Unaffected States Do Not Have To Test for Highly Pathogenic Avian InfluenzaUSDA’s Animal and Plant Health Inspection Service (APHIS) has issued updated guidance related to ...

USDA: Confirms Highly Pathogenic Avian Influenza (H5N1) in Dairy Herds in Idaho    
submitted by kickingbird at 6 hours ago from U.S. DEPARTMENT OF AGRICULTURE
On 11 May 2026, the U.S. Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) has confirmed the detection of highly pathogenic avian influenza (HPAI) H5N1 in twelve dairy ...

Canada: Highly pathogenic avian influenza in Saskatchewan, May 12, 2026    
submitted by kickingbird at 6 hours ago from Canadian Food Inspection Agency
The Canadian Food Inspection Agency (CFIA) has confirmed highly pathogenic avian influenza in the Rural Municipality of Caledonia No. 099, Saskatchewan, in non-commercial poultry.The CFIA has advised the ...

Canada: Highly pathogenic avian influenza in Alberta, May 11, 2026    
submitted by kickingbird at 1 days ago from Canadian Food Inspection Agency
The Canadian Food Inspection Agency (CFIA) has confirmed highly pathogenic avian influenza in the Special Area No.4, Alberta, in commercial poultry.The CFIA has advised the World Organisation for Animal ...

Jun Jiao, etc.,al. [preprint]G4 Eurasian avian-like H1N1 swine influenza viruses exhibit enhanced pathogenicity potential in mice and pigs. https://doi.org/10.64898/2026.05.12.724537.  Abstract  
submitted by kickingbird at 6 hours ago from https://doi.org/10.64898/2026.05.12.724537
Currently circulating swine influenza viruses (SIVs) mainly include H1N1, H1N2, and H3N2 subtypes. In this study, two G4 genotype Eurasian avian-like (EA) H1N1 SIVs were isolated from 556 samples collected ...

Alejandra Garcia-Glaessner, etc.,al. [preprint]Outbreak of H9N2 avian influenza viruses in lesser rhea in Peru, June-July 2025. https://doi.org/10.64898/2026.05.08.723762.  Abstract  
submitted by kickingbird at 6 hours ago from https://doi.org/10.64898/2026.05.08.723762
Avian influenza viruses (AIVs) are endemic in the Americas and responsible for outbreaks in both domestic and wild birds that occasionally spill over into humans. We report the first known outbreak of ...

Nathaniel Jackson, etc.,al. [preprint]A single PA-X mutation in bovine-origin H5N1 influenza virus reduces pathogenicity in mice. https://doi.org/10.64898/2026.05.09.724031.  Abstract  
submitted by kickingbird at 6 hours ago from https://doi.org/10.64898/2026.05.09.724031
Dairy cows have emerged as a reservoir for human infection with highly pathogenic avian influenza (HPAI) H5N1. At the bovine–human interface, H5N1 strains may acquire adaptive mutations that influence ...

Ort, J.T., Sobel Leonard, A., Li, S.H. et al. Cross-reactive human antibody responses to H5N1 influenza virus neuraminidase are shaped by immune history. Nat Commun (2026).  Abstract  
submitted by kickingbird at 6 hours ago from Nat Commun (2026)
H5N1 highly pathogenic avian influenza viruses have spread globally and pose a pandemic risk. Prior studies suggest that early life exposures to group 1 influenza viruses (H1N1 and H2N2) prime antibodies ...

Yang H, Zhang Y, Wang X, Chen T, Jia Y, Dou H, Jia. Epidemiological and Genomic Characterization of H5 Subtype Avian Influenza Viruses in Jining City, 2024–2025. Pathogens. 2026; 15(5):521.  Abstract  
submitted by kickingbird at 6 hours ago from Pathogens. 2026; 15(5):521
Objective: The aim of this study was to characterize the epidemiological features and whole-genome characteristics of H5 subtype avian influenza viruses circulating in Jining City during 2024–2025, and ...