2026-08-29T14:07:51Zhttps://repisalud.isciii.es/rest/oai/requestoai:repisalud.isciii.es:20.500.12105/266022025-12-18T13:01:23Zcom_20.500.12105_2052com_20.500.12105_2051col_20.500.12105_19609
Repisalud
author
Broberg, Eeva K
author
Svartström, Olov
author
Riess, Maximilian
author
Kraus, Annette
author
Vukovikj, Maja
author
Melidou, Angeliki
author
European Reference Laboratory Network for Human Influenza (ERLI-Net)
author
Pozo Sanchez, Francisco
author
Casas Flecha, Inmaculada
2025-03-31T13:48:33Z
2025-03-31T13:48:33Z
2024-09
Broberg EK, Svartström O, Riess M, Kraus A, Vukovikj M, Melidou A; Members of the European Reference Laboratory Network for Human Influenza (ERLI-Net); Collaborators. Co-circulation of seasonal influenza A(H1N1)pdm09, A(H3N2) and B/Victoria lineage viruses with further genetic diversification, EU/EEA, 2022/23 influenza season. Euro Surveill. 2024 Sep;29(39):2400020.
10.2807/1560-7917.ES.2024.29.39.2400020
1560-7917
1025-496X
Euro surveillance : bulletin Européen sur les maladies transmissibles = European communicable disease bulletin
39328158
https://hdl.handle.net/20.500.12105/26602
Background: Influenza viruses can cause large seasonal epidemics with high healthcare impact and severity as they continually change their virological properties such as genetic makeup over time. Aim: We aimed to monitor the characteristics of circulating influenza viruses over the 2022/23 influenza season in the EU/EEA countries. In addition, we wanted to compare how closely the circulating viruses resemble the viral components selected for seasonal influenza vaccines, and whether the circulating viruses had acquired resistance to commonly used antiviral drugs. Methods: We performed a descriptive analysis of the influenza virus detections and characterisations reported by National Influenza Centres (NIC) from the 30 EU/EEA countries from week 40/2022 to week 39/2023 to The European Surveillance System (TESSy) as part of the Global Influenza Surveillance and Response System (GISRS). Results: In the EU/EEA countries, the 2022/23 influenza season was characterised by co-circulation of A(H1N1)pdm09, A(H3N2) and B/Victoria-lineage viruses. The genetic evolution of these viruses continued and clade 6B.1A.5a.2a of A(H1N1)pdm09, 3C.2a1b.2a.2b of A(H3N2) and V1A.3a.2 of B/Victoria viruses dominated. Influenza B/Yamagata-lineage viruses were not reported. Discussion: The World Health Organization (WHO) vaccine composition recommendation for the northern hemisphere 2023/24 season reflects the European virus evolution, with a change of the A(H1N1)pdm09 component, while keeping the A(H3N2) and B/Victoria-lineage components unchanged.
eng
Europe
Characterisation
Genetic
Influenza virus
Sequencing
Surveillance
Co-circulation of seasonal influenza A(H1N1)pdm09, A(H3N2) and B/Victoria lineage viruses with further genetic diversification, EU/EEA, 2022/23 influenza season
research article
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Co-circulationSeasonalInfluenza_AH1N1_pdm09_2024.pdf
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Supplementary_Co-circulationSeasonalInfluenza_AH1N1_pdm09_2024.pdf