Results 21 to 30 of about 9,028,692 (199)

Vaccine-Elicited Antibody Responses to Influenza A(H3N2) Subclade K.

JAMA
Abstract Influenza H3N2 subclade K (J.2.4.1) is a genetic branch of H3N2 with 11 mutations in hemagglutinin and currently represents the dominant circulating influenza strain. We evaluated antibody responses to H3N2 subclade K before and after influenza vaccination in 46 healthy individuals.
Wang L, Nangle SJ, Waller-Pulido A, McMahan K, Pereira J, Chaudhari J, Barrett LO, Bhowmik R, Farrugia K, Ramsamooj R, Sordillo EM, Simon V, van Bakel H, Mostafa H, Pekosz A, Collier AY, Barouch DH.   +16 more
europepmc   +3 more sources

Converging influenza threats: Seasonal A(H3N2) (including subclade K) dynamics and the persistent pandemic risk of A(H5N1)

Travel Medicine and Infectious Disease
J David Acosta-España
exaly   +5 more sources

Loss of hemagglutination ability by H3N2 influenza A virus, subclade K

Abstract Seasonal human H3N2 influenza viruses, subclade K (J.2.4.1), have been the predominant influenza A viruses in the Northern hemisphere influenza season of 2025/2026. Since 2024, the vaccine virus A/Darwin/6/21 has emerged in different antigenic variants.
Ruonan Liang, Pascal Lexmond, Oliver C. Grant, Mark Pronk, Roland J. Pieters, Ron A.M. Fouchier, Geert-Jan Boons, Björn F. Koel, Robert P. de Vries   +8 more
openaire   +2 more sources

P-60 - THE ‘SUPER FLU’ THAT WASN’T: THE IMPACT OF THE H3N2 SUBCLADE K ON THE SCOTTISH POPULATION, 2025/26 [PDF]

J Public Health (Oxf)
Abstract Background Seasonal influenza remains unpredictable due to continual viral evolution, particularly within A(H3N2) lineages. Novel subclades can alter transmission, severity, and vaccine effectiveness (VE), underscoring the importance of pathogen-specific surveillance.
Mr Ebrahim Makhoul, Dr Stefanie Wilson, Dr Masoumeh Rezaie, Mr Allan Mcleod, Dr Kirsty Morrison, Mr Safraj Shahul Hameed, Mr John Wood, Prof Rory Gunson, Dr Kimberly Marsh   +8 more
europepmc   +2 more sources

Retraction note: Moderate protection from vaccination against influenza A(H3N2) subclade K in Beijing, China, September to December 2025 (Euro Surveill. 2026;31(2))

Eurosurveillance
Eurosurveillance editorial team
doaj   +4 more sources

Subclade K influenza A (H3N2) viruses display partial immune escape with preserved cross-neutralisation in a UK population

ABSTRACT We examined whether the recent emergence of influenza A(H3N2) subclade K, associated with an unusually early influenza season in the Northern hemisphere, was accompanied by a reduction in human population immunity. Using virus neutralisation assays on pre-epidemic human sera collected in May 2025, we found evidence of moderate ...
Dee K, Imrie RM, Mojsiejczuk L, Raveendran S, Chen H, Guio Archila G, Aljeri MS, Schultz V, Wang Z, Walsh SK, Zhang J, Hutchinson E, Willett BJ, Robertson DL, Hughes J, MacLean OA, Grove J, Thomson EC, Illingworth CJR, Murcia PR.   +19 more
europepmc   +2 more sources

Understanding H3N2 subclade K: a public health concern for the 2026 influenza season. [PDF]

Ann Med Surg (Lond)
Haq MAU, Ahmed Z, Khan MA, Fatima M.
europepmc   +2 more sources

Influenza vaccine effectiveness in school outbreaks during a A(H3N2) subclade K (J.2.4.1)-dominated season in Beijing, China, 2025-26

International Journal of Infectious Diseases
: Objectives: Schools are high-risk settings for influenza transmission. During the 2025-26 Northern Hemisphere season, influenza A(H3N2) subclade K (J.2.4.1) rapidly emerged and became predominant, but vaccine effectiveness (VE) in school-associated ...
Ying Shen, Chunna Ma, Daitao Zhang, Weixian Shi, Wei Duan, Jia Li, Lu Zhang, Dan Wu, Jiaojiao Zhang, Jiaxin Ma, Yingying Wang, Xiaodi Hu, Shuning Yan, Yuanzhi Di, Jiachen Zhao, Hui Xu, Guilan Lu, Yimeng Liu, Quanyi Wang, Peng Yang, Zhaomin Feng   +20 more
doaj   +2 more sources

Understanding Influenza A(H3N2) Subclade K (J.2.4.1): Asian Epidemiology, Clinical Features, and Public Communication Challenges. [PDF]

Influenza Other Respir Viruses
Hariyanto TI.
europepmc   +3 more sources

Is the emerging influenza A(H3N2) K subclade a specific threat for older adults? [PDF]

Geroscience
Quarleri J, Delpino MV.
europepmc   +4 more sources