IL6 and COVID-19: Cytokines, chemokines, and growth factors representative of platelet (IL-8, MIP-1α, RANTES, IL-1β, IL-6, TNF-α, PDGF-BB, TGF-β1) and endothelial cell (VEGF, IL-1Ra, IL-1β, ICAM-1) activation were compared between patients with COVID-19, with and without HIV infection, and healthy control participants (n=9) by means of univariate analysis.