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 ...

UK: Bird flu (avian influenza): latest situation in England    
submitted by kickingbird at 8 hours ago from GOV.UK
6 December 2025 Highly pathogenic avian influenza (HPAI) H5N1 was confirmed at a large commercial poultry premises near Sudbrooke, West Lindsey, Lincolnshire (AIV 2025/122).A 3km protection zone and 10km ...

WHO: Avian Influenza A(H5N5) - United States of America    
submitted by kickingbird at 8 hours ago from WHO
5 December 2025 Situation at a glanceOn 15 November 2025, WHO was notified of the 71st confirmed human case with influenza A(H5) since early 2024 in the United States of America— the first human case reported ...

Canada: Highly pathogenic avian influenza in British Columbia, December 4, 2025    
submitted by kickingbird at 1 days ago from The Canadian Food Inspection Agency
The Canadian Food Inspection Agency (CFIA) has confirmed highly pathogenic avian influenza in the City of Abbotsford, British Columbia, in commercial poultry.The CFIA has advised the World Organisation ...

UK: Bird flu (avian influenza): latest situation in England    
submitted by kickingbird at 1 days ago from GOV.UK
5 December 2025 Highly pathogenic avian influenza (HPAI) H5N1 was confirmed at a third large commercial poultry premises near Gainsborough, West Lindsey, Lincolnshire (AIV 2025/121). A 3km protection ...

Jin Y, Cui H, Jiang L, et al. From Surfaces to Spillover: Environmental Persistence and Indirect Transmission of Influenza A(H3N8) Virus. Microorganisms. 2025; 13(12):2782.  Abstract  
submitted by kickingbird at 8 hours ago from Microorganisms. 2025; 13(12):2782
Avian influenza viruses (AIVs) pose a significant zoonotic threat, with the emerging H3N8 subtype raising increasing concern due to sporadic human infections. Current strategies for risk assessment of ...

David C. Brice, etc.,al. Immunogenicity and efficacy of commercial poultry avian influenza vaccines against HPAI A(H5N1) clade 2.3.4.4b viruses in Mexico. Virology.  Abstract  
submitted by kickingbird at 8 hours ago from Virology
The high-pathogenicity avian influenza A (H5N1) viruses of clade 2.3.4.4 b have been detected in domestic poultry and wild birds in Mexico. Vaccination with H5 vaccines has been implemented as a complementary ...

Jingjing Zhang, etc.,al. Genomic and structural characterization of a reassortant H9N2 avian influenza virus from a human case. International Journal of Infectious Diseases.  Abstract  
submitted by kickingbird at 8 hours ago from International Journal of Infectious Diseases
BackgroundThe H9N2 subtype of avian influenza virus (AIV) is widely distributed in poultry and occasionally infects humans, posing a potential public health risk. While most infections are mild, severe ...

Liedes, O., Reinholm, A., Ekstr?m, N. et al. Influenza A(H5N8) vaccine induces humoral and cell-mediated immunity against highly pathogenic avian influenza clade 2.3.4.4b A(H5N1) viruses in at-risk individuals. Nat Microbiol (2025).  Abstract  
submitted by kickingbird at 1 days ago from Nat Microbiol (2025)
Finland faced an outbreak of highly pathogenic clade 2.3.4.4b A(H5N1) avian influenza in 2023, which spread from wild birds to fur farms. Vaccinations of at-risk individuals began in June 2024 using the ...

Kephart, S.M., Awatramani, K.F., Saunders, M.I. et. Host switching mutations in H5N1 influenza hemagglutinin suppress site-specific activation dynamics. Nat Commun (2025).  Abstract  
submitted by kickingbird at 1 days ago from Nat Commun (2025)
Increase in human H5N1 spillover infections resulting from dissemination of highly pathogenic avian influenza (HPAI) virus into bird and mammal populations raises concerns about HPAI gaining human transmissibility. ...