Since Th1 response and secretion of IL-12 and IFN-γ are mostly governed by transcriptional factor Tbet, and Th17 response and secretion of IL-17 and IL-23 are mostly regulated by RORγT, we analyzed whether the expression of this transcriptional factor within T cells differs throughout progression of COVID-19 39, 40. Here, IL17A is linked to COVID-19.