IL6 and COVID-19: It has been shown that some parameters related to inflammation, such as TNFα, IL-6, interleukin-8 (IL-8), interleukin-10 (IL-10), CRP, white blood cell count (WBC), lymphocyte count (LC), and the number of neutrophils (NC) are correlated with the severity of COVID-19 [36,37,38].