In COVID-19 infected patients, the reports have shown that primary plasma measures of IL-1β, IL-1RA, IL-7, IL-8, IL-10, IFN-ɣ, monocyte chemoattractant peptide (MCP)-1, macrophage inflammatory protein (MIP)-1A, MIP-1B, granulocyte-colony-stimulating factor (G-CSF), and TNF-α are enhanced in COVID-19 patients. Here, CCL2 is linked to COVID-19.