The European Influenza Surveillance Network (EISN) consists of contact points for influenza surveillance (epidemiological and virological) nominated by the Competent Bodies for surveillance of the Member States. Epidemiological and virological surveillance data on influenza are collected through The European Surveillance System (TESSy). As of 2008, the responsibility for the former activities of the European Influenza Surveillance Scheme (EISS) has been transferred to the European Centre for Disease Prevention and Control (ECDC).
By analysing the data on a weekly basis and issuing a weekly report, ECDC aims to provide to decision makers in Member States and national public health experts the basis to better assess influenza activity in Europe and to make available more accurate epidemiological and virological information to their governments, health care professionals and the general public.
The activities aim to contribute to reducing the burden of disease associated with influenza in Europe and include collection and exchange of timely information on influenza activity, contribution to the annual determination of the influenza vaccine content, provision of relevant information about influenza to health professionals and the general public and contribution to European influenza pandemic preparedness activities. ECDC also operates the influenza reference laboratory network: Community Network of Reference Laboratories for Human Influenza (CNRL).
Data collected for the surveillance of influenza are:
- Aggregate data of influenza-like illness (ILI) or Acute Respiratory infections (ARI) by age groups reported by sentinel practices in primary health care facilities.
- Qualitative indicators: intensity, geographic spread and trend.
- Virological data: types and syb-types of influenza viruses collected from sentinel and non-sentinel sources, genetic and antigenic characterisation of tested viruses, antiviral susceptibility and detections of the respiratory syncytial virus (RSV).
- Hospitalised severe influenza cases reported with severe acute respiratory cases (SARI) caused by other pathogens. These cases are reported with other variables: age-groups, causative influenza (sub-) types, vaccination status, underlying conditions.
Weekly analysis of influenza surveillance is available in the Weekly Influenza Surveillance Overview (WISO) from week 40 to week 20. During off-season, i.e. from week 21 to 39, the bulletin is available on a fortnightly basis.
The situation of influenza elsewhere in Europe is available at the WHO Europe report: Euroflu. For information about the influenza situation in the world, see WHO influenza updates.
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 Weekly Influenza Surveillance Overview (WISO) is a surveillance report containing a clinical and virological overview of the current week and of the season. For each reporting country, clinical and virological data for the week are presented in a table. The table also links to a clinical and virological overview by country and season.
Read more about WISO
SEE ALL INFLUENZA UPDATES ON THE ECDC PORTAL
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ECDC communicable disease threat report (CDTR) this week: Legionnaires' disease, influenza and measles in the spotlight 20 Feb 2012 Weekly surveillance overview report: increasing trends and A(H3) dominating 17 Feb 2012 ECDC starts publishing its weekly communicable disease threat report (CDTR) 13 Feb 2012 |
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Communicable disease threats report, week 7, 12-18 February 2012 17 Feb 2012 Weekly influenza surveillance overview, 6-12 February 2012 - Week 6 17 Feb 2012 Communicable disease threats report, week 6, 5-11 February 2012 13 Feb 2012 |
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How spread of the influenza A(H1N1)pdm09 pandemic was affected by school closures – Alberta, Canada 22 Feb 2012 Oseltamivir-resistant influenza A(H1N1)pdm09 patterns across the globe: findings in Australia (season 2011) and United States (season 2010-11) 21 Feb 2012 Facemasks and good hand hygiene to reduce influenza transmission in households – Cluster Randomised Controlled Trial in Germany 06 Feb 2012 |
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Sentinel Surveillance for Severe Influenza in England (United Kingdom) 03 Feb 2012 United Kingdom – recent official seasonal influenza publications 09 Jan 2012 French Influenza Pandemic Preparedness and Response plan 13 Dec 2011 |
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Training workshop on vaccine safety for Member States, building on the experience obtained in the ECDC vaccine safety project VAESCO 20 Feb 2012 Molecular surveillance strategy for human influenza 17 Nov 2011 Workshop on Seasonal Influenza Vaccination 17 Nov 2011 |
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