Kids' COVID syndrome—MIS-C—less severe in Omicron

COVID-19–related multisystem inflammatory syndrome in children (MIS-C) was milder amid the Omicron variant surge than during the Alpha and Delta waves in Israel, concludes a research letter published late last week in JAMA. Researchers from Rambam Health Care Campus in Haifa conducted prospectively studied all pediatric MIS-C patients at 12 Israeli hospitals during the same 16-week period in the Alpha (Dec 20, 2020, to Apr 10, 2021), Delta (Jul 18 to Nov 13, 2021), and Omicron (Nov 21, 2021, to Mar 12, 2022) pandemic waves. Participating hospitals account for roughly 70% of pediatric intensive care unit (ICU) admissions in Israel.