The risk for multisystem inflammatory syndrome in children after infection with SARS-CoV-2 was substantially lower during the omicron wave compared with other variants, researchers from Denmark reported in JAMA Pediatrics.
The CDC defines a case of multisystem inflammatory syndrome in children (MIS-C) as any patient aged younger than 21 years who presents with a fever; laboratory evidence of inflammation; evidence of clinically severe illness requiring hospitalization, with two or more organs involved, who has no alternative plausible diagnosis and has tested positive for current or recent