CCL2 and COVID-19: Different studies have found high serum levels of the chemokines CXCL8/IL-8, IP-10, GM-CSF, CCL2/MCP-1, CCL3/MIP-1α, CXCL10/IP-10, CCL5/RANTES, and CCL20/MIP-3α, in patients with moderate and severe forms of the COVID-19 (15, 18).