Within the chemokines that were significantly upregulated in COVID19, CXCL10, CCL2 and CXCL9 together with IL8/CXCL8 increased significantly in moderate/severe cases (Figure 5C) and CXCL10 and CXCL9 in patients who died (Figure 5D), indicating that CXCL10 and CXCL9 differentiate COVID19 from NON-COV-RTI and correlate with severity upon admission and death within COVID19 patients. The gene discussed is CCL2; the disease is COVID-19.