An Observational Cohort Study to Determine Late Outcomes and Immunological Responses After Infection With SARS-CoV-2 in Children With and Without Multisystem Inflammatory Syndrome (MIS-C)
The primary objectives of this study are: * To determine the proportion of children with Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) related death, rehospitalization or major complications after infection with SARS-CoV-2 and/or Multisystem Inflammatory Syndrome in Children (MIS-C), and * To determine immunologic mechanisms and immune signatures associated with disease spectrum and subsequent clinical course during the year of follow-up.
• Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) detection from a respiratory specimen, and/or
• Meets criteria for Multisystem Inflammatory Syndrome in Children (MIS-C), and/or
• Meets criteria for MIS-C, except has involvement of only 1 organ system
⁃ Cases meeting clinical criteria for MIS-C but without known SARS-CoV-2 exposure, and who are being treated as MIS-C by the treating physician, but with negative SARS-CoV-2 PCR and pending or negative antibody testing, may be enrolled as subjects. If subsequent antibody testing is positive, cases will be labelled as confirmed MIS-C. If SARS-CoV-2 antibody testing is negative, subjects will be labeled at the end of the study as suspected/not confirmed MIS-C.