Automatic vaccination surveillance

The automatic vaccination surveillance continuously estimates vaccination coverage and adherence, which are important parameters in assessing population immunity. Automatic surveillance data form the basis for vaccine effectiveness studies. The surveillance system also serves to send out vaccination invitation reminders to those who have not yet received vaccination. This applies to both the childhood vaccination programme and the vaccination programme in autumn targeting COVID-19 and influenza.

The Danish vaccination register (DDV) forms the basis for automatic vaccination surveillance. Data from the register is enriched with additional information from other registers using algorithms and business rules. In this manner, target groups and risk groups can be identified.

The automatic surveillance system generates output for a large number of user groups, including other authorities, media, citizens, and researchers. Vaccination data for influenza and COVID-19 are for example presented on interactive dashboards during the autumn and winter season. Afterwards, data can still be found under archived dashboards. Data describing the childhood vaccination programme are presented online at Surveillance in Figures, Graphs, and Maps.