A comparison of two registry-based systems for the surveillance of persons hospitalised with COVID-19 in Norway, February 2020 to May 2022

ConclusionChanges in patient cohorts, virus characteristics and the management of COVID-19 patients from late 2021 impacted the registration of patients and coding practices in the registries. Using ICD-10 codes for the surveillance of persons hospitalised due to COVID-19 requires age- and time-specific definitions and ongoing validation to consider temporal changes in patient cohorts and virus characteristics.

Source: Eurosurveillance - August 17, 2023 Category: Infectious Diseases Authors: Robert Whittaker, Salla Toikkanen, Katharine Dean, Trude Marie Lyngstad, Eirik Alnes Buanes, Hilde Kl øvstad, Trine Hessevik Paulsen and Elina Seppälä Source Type: research