found that children both with acute COVID‐19 (n = 14) and MIS‐C (n = 9) had lymphopenia, although more pronounced in MIS‐C, and that all had high levels of CD4+ T cell proliferation, with both CD4+ and CD8+ T cell proliferation in MIS‐C exceeding that in adult COVID‐19.62 This evidence concerns the gene CD4 and COVID-19.