Influenzanet is a system to monitor the activity of influenza-like-illness (ILI) with the aid of volunteers via the internet

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Developing the framework for an epidemic forecast infrastructure.

The Seventh Framework Programme (FP7) bundles all research-related EU initiatives.

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Participating countries and volunteers:

The Netherlands 0
Belgium 0
Portugal 0
Italy 0
Great Britain 10916
Sweden 3559
Germany 0
Austria 0
Switzerland 0
France 6674
Spain 0
Ireland 0
Denmark 0
InfluenzaNet is a system to monitor the activity of influenza-like-illness (ILI) with the aid of volunteers via the internet. It has been operational in The Netherlands and Belgium (since 2003), Portugal (since 2005) and Italy (since 2008), and the current objective is to implement InfluenzaNet in more European countries.

In contrast with the traditional system of sentinel networks of mainly primary care physicians coordinated by the European Influenza Surveillance Scheme (EISS), InfluenzaNet obtains its data directly from the population. This creates a fast and flexible monitoring system whose uniformity allows for direct comparison of ILI rates between countries.

Any resident of a country where InfluenzaNet is implemented can participate by completing an online application form, which contains various medical, geographic and behavioural questions. Participants are reminded weekly to report any symptoms they have experienced since their last visit. The incidence of ILI is determined on the basis of a uniform case definition.

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The response for each participant is based on the symptoms you entered. It's not a medical diagnosis. The symptoms questionnaire regards only flu, common cold or gastrointestinal symptoms. If you have other kind of symptoms or if you are worried for any other issue, we suggest you contact your GP.


Flu activity has officially commenced and we continue to use the weekly symptoms questionnaire to monitor trends relating to Covid-19 and Influenza like illness (ILI). Please continue to complete your symptoms questionnaire as often as possible.

Please update your 2022/23 vaccination status for influenza via the Profile link above

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