IL2 and COVID-19: Figure 8 depicted certain disorders that resulted in post-COVID-19 complications. Further, the ARDS and cytokine storm after severe COVID-19 infection is the major cause of COVID-19-related death. Pro-inflammatory cytokines for instance interleukin IL-1, IL-2, IL-6, IL-8, IL-17, IFN-γ, and TNF-α were raised in these patients, affecting clinical symptoms and severity [249].