Finally, dSpace analysis identified several genes (CCL2, OASL, CASP7, TMEM123, MAFB, VRK2, UBE2L6, NAPA) higher in patients with mild viral infection than those with severe viral infection or HCs (Figures 5N and 5O, Figures S4G and S4H). This evidence concerns the gene CCL2 and viral infectious disease.