CD163 and COVID-19: Likewise, Vineeth et al. [30] reported that reticuloendothelial activation markers (VWF, D-dimer, ferritin, and sCD163) were independently correlated with COVID-19 severity, with VWF (units/dl) values of 202 (95% CI: 131–253) vs. 293.5 (95% CI: 231.4–355.2) vs. 328.8 (95% CI: 272.9–384) vs. 340 (95% CI: 297–389, p < 0.001, for mild, moderate, severe, and critical disease, respectively.