The proinflammatory monocytes (cluster 4) expressed a special gene combination, namely, chemokine ligands, interleukins, as well as lncRNAs (e.g., CCL3L1, CCL4, CCL4L2, CXCL2) related to virus infection,26 inflammation,27 and pyroptosis.28 Here, CXCL2 is linked to viral infectious disease.