CCL7 and COVID-19: No significant differences between patients with COVID-19 and healthy donors were detected for IFN-γ, TNF-α, granzyme B, IL-6, IL-12/IL-23p40, IL-18, IL-23, CCL2, CCL7, CCL8, CXCL1, CXCL11, and CXCL12α.