期刊
ACTA PAEDIATRICA
卷 110, 期 11, 页码 3063-3068出版社
WILEY
DOI: 10.1111/apa.16051
关键词
epidemiology; Kawasaki disease; multi-inflammatory syndrome in children; social distancing; transmissible microbes
类别
The study found a decrease in Kawasaki disease cases and a low occurrence rate of MIS-C during the COVID-19 pandemic. The reduced incidence of respiratory infections and the protective effect of social distancing suggest a potential link between transmissible microbes and Kawasaki disease.
Aim We investigated whether the ongoing COVID-19 pandemic was associated with the occurrence of Kawasaki disease or with multi-inflammatory syndrome in children (MIS-C). Methods This national Finnish register-based study was based on laboratory-confirmed severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections, MIS-C and Kawasaki disease cases. We performed a time series analysis on the occurrence of Kawasaki disease in 2016-2020. Results In 2020, there were 5170 laboratory-confirmed COVID-19 cases in children under 18 years of age and five fulfilled the MIS-C case definition. The occurrence of MIS-C was 0.97 per 1000 (95% confidence interval: 0.31-2.26) laboratory-confirmed SARS-CoV-2 infections in children. Our time series analysis showed that Kawasaki disease cases decreased during the COVID-19 pandemic. The seasonally adjusted incidence rate ratio was 0.49 (95% confidence interval: 0.32-0.74) when it was compared to pre-pandemic levels. This coincided with a reduced occurrence of respiratory infections, due to social distancing in the population. Conclusion This nationwide register-based study found that MIS-C was a rare complication of the SARS-CoV-2 infection. The occurrence of Kawasaki disease and respiratory infections decreased during the pandemic. This suggests that transmissible microbes may play an important role in Kawasaki disease and social distancing may have a protective effect.
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