This is a prospective, multicenter, observational cohort study to assess short and long-term clinical outcomes and immune responses after Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection and/or Multisystem Inflammatory Syndrome in Children (MIS-C) in children (e.g., defined as individuals who have not reached their 21st birthday at the time of enrollment). SARS-CoV-2 causes Coronavirus Disease 2019 (COVID-19)~Participants will be identified through active recruitment measures within hospitals and through ambulatory and laboratory-based databases of SARS-CoV-2 positive individuals <21 years of age. The study will enroll a minimum of 250 subjects from a diverse racial/ethnic background, from participating medical centers in the United States. The study period of participation is 1 year (12 months).
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.