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 ...

Canada: Highly pathogenic avian influenza in Saskatchewan, April 15, 2026    
submitted by kickingbird at 3 hours ago from Canadian Food Inspection Agency
The Canadian Food Inspection Agency (CFIA) has confirmed highly pathogenic avian influenza in the Rural Municipality of Stonehenge No. 73, Saskatchewan, in non-commercial poultry.The CFIA has advised the ...

WHO: Avian Influenza A(H9N2) - Italy    
submitted by kickingbird at 3 hours ago from WHO
Situation at a glanceOn 21 March 2026, the National International Health Regulations (IHR) Focal Point for Italy notified the World Health Organization (WHO) of the identification of a human case of avian ...

Canada: Highly pathogenic avian influenza in Saskatchewan, April 14, 2026    
submitted by kickingbird at 18 hours ago from Canadian Food Inspection Agency
The Canadian Food Inspection Agency (CFIA) has confirmed highly pathogenic avian influenza in the Rural Municipality of Monet No. 257, Saskatchewan, in commercial poultry.The CFIA has advised the World ...

UK: Bird flu (avian influenza): latest situation in England    
submitted by kickingbird at 1 days ago from GOV.UK
14 April 2026Highly pathogenic avian influenza (HPAI) H5N1 was confirmed in commercial poultry:at a third premises near Gainsborough, West Lindsey, Lincolnshirenear Great Shelford, South Cambridgeshire, ...

Lim A, Poulsen K, Caserta LC, Guan L, Opgenorth E,. Highly Pathogenic Avian Influenza A(H5N1) Virus RNA in Bovine Semen, California, USA, 2024. Emerg Infect Dis. 2026 May.  Abstract  
submitted by kickingbird at 3 hours ago from Emerg Infect Dis. 2026 May
Since March 2024, highly pathogenic avian influenza (HPAI) A(H5N1) virus has infected dairy cattle in the United States, prompting concern about novel transmission routes. During an outbreak in California, ...

Harrington, W.N., Signore, A., Kercher, L. et al. Rapid expansion of genotype D1.1A(H5N1) influenza viruses in wild birds across North America during the 2024 migratory season. Nat Med (2026).  Abstract  
submitted by kickingbird at 4 hours ago from Nat Med (2026)
In late 2021, high pathogenicity avian influenza A(H5N1) clade 2.3.4.4b viruses entered North America and reassorted rapidly with local avian influenza viruses. In September 2024, we detected a new reassortant ...

Knief, U., Ahrens, A. K., Allendorf, V., Behringer. Outbreak dynamics of high pathogenicity avian influenza virus H5N1, clade 2.3.4.4b euBB, in black-headed gulls and common terns in Germany in 2023. Avian Pathology.  Abstract  
submitted by kickingbird at 4 hours ago from Avian Pathology
Since the winter of 2022/23, the high pathogenicity avian influenza virus (HPAIV) H5N1 clade 2.3.4.4b, genotype euBB, has caused extensive mortality among wild birds. This genotype emerged in France in ...

Singh G, Bhavsar D, Hermann E, Gleason C, Singh Sa. Population immunity to clade 2.3.4.4b H5N1 is dominated by anti-neuraminidase antibodies. mBio 0:e00445-26.  Abstract  
submitted by kickingbird at 4 hours ago from mBio 0:e00445-26
Clade 2.3.4.4b highly pathogenic avian influenza A(H5N1) viruses continue to expand geographically and across mammalian hosts, raising concern about pandemic potential. The degree and specificity of pre-existing ...

Mark A Power, etc.,al. Characterisation of immune responses targeting highly pathogenic avian influenza A(H5) viruses in health-care workers in the Netherlands: an observational, cross-sectional analysis. The Lancet Microbe.  Abstract  
submitted by kickingbird at 4 hours ago from The Lancet Microbe
BackgroundHighly pathogenic avian influenza A(H5) viruses pose a pandemic threat, with a history of mammalian adaptation and zoonotic spillovers into humans. We aimed to determine whether pre-existing ...