IL6 and COVID-19: Luoet al. (2020) and Liuet al. (2020) stated that the combination of IL-6 levels >20 pg/mL and CD8+ T lymphocytes <165 cells/μL is a prognostic indicator and can predict COVID-19 death.11,12 An increase in IL-6 levels of more than 10 times correlated with severe COVID-19, and decreased levels were related to successful therapy.11,12