Results 31 to 40 of about 9,626,298 (215)

Early-Season Detection of Influenza A(H3N2) Subclade K in Wastewater, Colorado, USA, 2025–2026 [PDF]

Emerging Infectious Diseases
We assessed the value of wastewater sequencing for monitoring influenza circulation in Colorado, USA, focusing on the emergence of influenza A(H3N2) subclade K. We detected subclade K in wastewater 31 days before clinical detection.
Molly C. Hetherington-Rauth, Van Nguyen, Emily Washeleski, Kevin Castro Vital, Gabrielle Lequia, Deborah Aragon, Nisha B. Alden, Kirsten Weisbeck, Laura Bankers, Alexandria Rossheim, Allison Wheeler, Shannon R. Matzinger   +11 more
doaj   +2 more sources

Influenza A(H3N2) Subclade K During the 2025–26 Season and Differential Humoral Responses in Vaccinated Individuals Versus Vaccinated Convalescents in Israel [PDF]

Vaccines
Background/Objectives: During the 2025–26 influenza season, the antigenically distinct A(H3N2) subclade K emerged and spread globally, raising significant concerns regarding seasonal vaccine effectiveness. This study aimed to map antigenic and structural
Ital Nemet, Neta S. Zuckerman, Nofar Atari, Limor Kliker, Menucha Jurkowicz, Mayan Gilboa, Yael Weiss-Ottolenghi, Nathan Keller, Michal Stein, Gili Regev-Yochay, Yaniv Lustig, Michal Mandelboim   +11 more
doaj   +2 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
Jaime David Acosta-España, Alfonso J. Rodríguez-Morales, Jenny Belén Altamirano-Jara   +2 more
exaly   +5 more sources

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

Evidence from Phylogenomics and Morphology Provide Insights into the Phylogeny, Plastome Evolution, and Taxonomy of Kitagawia

Plants, 2022
Kitagawia Pimenov is one of the segregate genera of Peucedanum sensu lato within the Apiaceae. The phylogenetic position and morphological delimitation of Kitagawia have been controversial.
Jia-Qing Lei, Chang-Kun Liu, Jing Cai, Megan Price, Song-Dong Zhou, Xing-Jin He   +5 more
doaj   +2 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