Risk and phenotype of multisystem inflammatory syndrome in vaccinated and unvaccinated Danish children before and during the omicron wave

M Holm, L Espenhain, J Glenthøj, LS Schmidt… - JAMA …, 2022 - jamanetwork.com
Methods| This population-based cohort study prospectively included patients aged 0 to 17
years with MIS-C from all 18 Danish pediatric departments. Patients were diagnosed from
January 1, 2022, to March 15, 2022, after SARS-CoV-2 infection between January 1 and
February 1, 2022, when Omicron constituted more than 95% of variants. We followed the
STROBE reporting guidelines for cohort studies. We used previously reported data to
compare MIS-C during Omicron with the pre-Omicron waves. 1, 2 We calculated the risk of …