Norovirus surveillance system

THL’s Expert Microbiology unit is responsible for the laboratory-based surveillance of norovirus infections in Finland.

Purpose of surveillance

• To keep track of the incidence of noroviruses in Finland
• To identify norovirus outbreaks
• To identify new norovirus strains 

Surveillance methods

• Laboratory-based surveillance by the National Infectious Diseases Register
• Food and waterborne disease outbreak surveillance system RYMY
• Virologic monitoring at the THL laboratory
• Monitoring the syndrome using the Register of Primary Health Care Visits (Avohilmo)
• Finnish National Infectious Diseases Register