Table 4.

Definition of MIS-C

Age < 21 y with fever (>38.0°C or subjective) for ≥24 h

Laboratory evidence of inflammation

Multisystem (more than two) organ involvement

No alternative plausible diagnoses

Positive for current or recent SARS-CoV-2 infection or exposure within the 4 weeks before the onset of symptoms (noting that because infection may occur from an asymptomatic contact, children and their caregivers may not even know that they had been infected)