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oai:repisalud.isciii.es:20.500.12105/149352025-04-04T17:04:43Zcom_20.500.12105_2052com_20.500.12105_2051col_20.500.12105_19609

00925njm 22002777a 4500 dc Melidou, Angeliki author Pereyaslov, Dmitriy author Hungnes, Olav author Prosenc, Katarina author Alm, Erik author Adlhoch, Cornelia author Fielding, James author Sneiderman, Miriam author Martinuka, Oksana author Celentano, Lucia Pastore author Pebody, Richard author WHO European Region author Pozo Sanchez, Francisco author Casas Flecha, Inmaculada author European Influenza Surveillance Network (EISN) author 2020-11 The COVID-19 pandemic negatively impacted the 2019/20 WHO European Region influenza surveillance. Compared with previous 4-year averages, antigenic and genetic characterisations decreased by 17% (3,140 vs 2,601) and 24% (4,474 vs 3,403). Of subtyped influenza A viruses, 56% (26,477/47,357) were A(H1)pdm09, 44% (20,880/47,357) A(H3). Of characterised B viruses, 98% (4,585/4,679) were B/Victoria. Considerable numbers of viruses antigenically differed from northern hemisphere vaccine components. In 2020/21, maintaining influenza virological surveillance, while supporting SARS-CoV-2 surveillance is crucial. Euro Surveill. 2020 Nov;25(46):2001822. 10.2807/1560-7917.ES.2020.25.46.2001822 1560-7917 Euro Surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin 33213683 http://hdl.handle.net/20.500.12105/14935 COVID-19 Europe SARS-CoV-2 Influenza virus Pandemic Surveillance Virus characterization Virological surveillance of influenza viruses in the WHO European Region in 2019/20 - impact of the COVID-19 pandemic