Published every Friday, the weekly influenza surveillance overview is a collection of timely and relevant information regarding influenza activity in Europe. It provides key statistical data on a variety of issues including the following: sentinel surveillance of influenza like illness (ILI) and acute respiratory illness (ARI); virological surveillance; aggregate numbers of pandemic H1N1 2009; hospital surveillance of severe acute respiratory infection (SARI); mortality surveillance; and qualitative reporting.
http://www.ecdc.europa.eu/en/activities/surveillance/EISN/Pages/home.aspx