The most common COVID-19 symptom was lung injury produced by high levels of pro-inflammatory cytokines, such as TNF-α, granulocyte colony-stimulating factor (G-CSF), monocyte chemoattractant protein 1 (MCP-1), interferon- γ inducible protein 10 (IP10), IL-6, and IL-7 (Gupta et al., 2020; Jayaramayya et al., 2020). Here, CCL2 is linked to COVID-19.