IL6 and COVID-19: The other inflammatory markers were elevated in patients during the acute phase of COVID-19, including CRP levels (56mg/L vs. 12mg/L, p-value < 0.001), IL-6 (49pg/mL vs. 17pg/mL, p-value < 0.001), fibrinogen (5.1g/L vs. 3.7g/L, p-value < 0.001), and D-dimers (331ng/mL vs. 262ng/mL, p-value < 0.001).