As the prevalence of COVID-19 cases increased in the fall of 2023, so too did the cases of multisystem inflammatory syndrome in children (MIS-C). The Centers for Disease Control and Prevention recently reported that MIS-C incidence—while still quite rare—was highest in late 2020 through early 2021. However, cases rose alongside COVID-19 activity in the general population late last year. Among the 117 MIS-C patients with illness onset in 2023, 68 (58%) had no underlying medical …
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