Table 2.
Alerts during the first 2 years of ICARES
| Alert | Syndrome (Health care institution) | Additional public health diagnostics | True cluster | Comment |
|---|---|---|---|---|
| 1 | Respiratory tract infection (GP) | No | No | Different causative agents and coding imperfections |
| 2 | Infectious hepatitis (GP) | Yes | No | Non-infectious hepatitis |
| 3 | Meningoencephalitis (Hospital) | No | Yes | Enterovirus encephalitis |
| 4 | Meningoencephalitis (Hospital) | No | No | Two unrelated cases of Listeria in Katwijk |
| 5 | Infectious hepatitis (GP) | No | No | Coding imperfections |
| 6 | Respiratory tract infection (Hospital and GP) | No | Yes | Long lasting influenza season with high peak incidence |
| 7 | Meningoencephalitis (Hospital) | No | No | Coding imperfections/double coding |
| 8 | Meningoencephalitis (GP) | No | No | Non-acute illness |