Proinflammatory cytokine concentrations among children hospitalized with COVID-19 and MIS-C enrolled into the COVAC-TP trial. Concentrations are depicted below as median with IQR. Total samples analyzed by study time point are as follows: day 0 (n = 28), day 1 (n = 35), day 2 (n = 28), day 3 (n = 28), day 7 (n = 11), and day 14 (n = 5).