IL6 and COVID-19: The correlation analysis between the plasma levels of MBL and the cytokines IL-6 and TNF-α showed a trend toward a negative correlation between the levels of MBL and IL-6 (r= -0.3553; p= 0.0540) and a trend toward a positive correlation between IL-6 and TNF-α levels (r= 0.3419; p= 0.0644) in the group with severe COVID-19 (Figure 3).