Figure 2. Observed incidence of Influenza Like Illness (ILI) according to the Sentinel General Practitioners registry (sentinel GP registry) and predicted according to Intensive Care Unit (ICU) data.

Weeks where an influenza epidemic was detected are also shown. Figure (a), (b), and (c) predict one to three weeks ahead. Weeks marked with an *-sign indicate multiple detections of an influenza epidemic in one influenza year.