Comparison of the flow cytometry results using Log Density Plots (Figure 1I) showed significantly higher CD66b/CD3 (p=6.8 x 10-8), G-MDSC/CD3 (4.07 x 10-12) ratios and percent G-MDSC (1.68 x 10-16) in severe COVID-19 patients compared to other patients. The gene discussed is CEACAM8; the disease is COVID-19.