Influenza virus characterisation - Summary Europe, September 2012
Since 01 January 2012, influenza A(H1N1)pdm09, influenza A(H3N2) and influenza B/Victoria and B/Yamagata lineage viruses have been detected in ECDC-affiliated countries.
Since 1 January 2012, influenza A(H1N1)pdm09, influenza A(H3N2) and influenza B/Victoria and B/Yamagata lineage viruses have been detected and analysed in EU/EEA countries. The report summarises the findings as follows:
- Type A viruses have predominated over type B.
- A(H3N2) viruses have predominated over A(H1N1)pdm09 viruses.
- A(H1N1)pdm09 viruses continue to show genetic drift from the vaccine virus, A/California/07/2009, but the vast majority remain antigenically similar to it.
- During the last nine months, all European A(H3N2) viruses sequenced fell within five genetic clusters.
- Recent B/Victoria lineage viruses fell within the B/Brisbane/60/2008 genetic clade and were antigenically similar to reference cell-propagated viruses of the B/Brisbane/60/2008 genetic clade.
- Recent B/Yamagata-lineage viruses fell into two genetic clades, represented by the recommended vaccine component for the 2012/2013 influenza season, B/Wisconsin/1/2010 (clade 3), or B/Estonia/55669/2012 (clade 2); viruses in these clades are antigenically distinguishable.
- Antigenic analyses of A(H3N2)v viruses, the cause of zoonotic infections in the USA, indicate that these viruses are antigenically distinct from seasonal A(H3N2) viruses.
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.