Influenza Virus Characterisation, June 2013
Over the course of the 2012–13 season, A(H1N1)pdm09, A(H3N2) and B/Victoria- and B/Yamagata-lineage influenza viruses have co-circulated in ECDC-affiliated countries. The relative prevalences of each has varied between countries.• Type A and type B viruses have been detected in similar proportions but with type A peaking and declining slightly before type B.• A(H1N1)pdm09 viruses have been detected at approximately twice the level of A(H3N2) viruses.• The vast majority of A(H1N1)pdm09 viruses have remained antigenically similar to the vaccine virus, A/California/07/2009, but continued to show genetic drift with an increasing prevalence of genetic group 6 viruses.• The vast majority of A(H3N2) viruses have been antigenically and genetically similar to cell-propagated A/Victoria/361/2011, the prototype vaccine virus for the 2012–13 influenza season.• Viruses of the B/Yamagata-lineage have predominated over those of the B/Victoria-lineage.• B/Victoria-lineage viruses have remained antigenically similar to cell-propagated reference viruses of the B/Brisbane/60/2008 genetic clade.• B/Yamagata-lineage viruses formed two antigenically distinguishable genetic clades: clade 3 represented by B/Wisconsin/1/2010 (the recommended vaccine component for the 2012–13 influenza season) and, in increasing numbers, clade 2 represented by B/Massachusetts/2/2012 (the recommended vaccine component for the 2013–14 influenza season).
Legionnaires’ disease - Annual Epidemiological Report for 2020
10 May 2022 - Legionnaires’ disease remains an uncommon and mainly sporadic respiratory infection with an overall notification rate of 1.9 cases per 100 000 population for the EU/EEA in 2020.
Influenza virus characterisation - Summary Europe, March 2022
21 Apr 2022 - This is the fifth report for the 2021-2022 influenza season. As of week 13 2022 90 644 influenza detections across the WHO European Region were reported to the European Surveillance System TESSy ), a rise of over 87 000 since week 47/2021 with most being reported from week 49/2021 onwards.
Chikungunya virus disease - Annual Epidemiological Report for 2020
5 Apr 2022 - For 2020, 24 EU/EEA countries reported 59 cases of chikungunya virus disease, of which 52 (88%) were confirmed. This was the lowest number of cases reported at the EU/EEA level since 2016. The EU/EEA notification rate was <0.1 cases per 100 000 population.