CXCL8 and COVID-19: Our data corroborate the previously reported increase in antiviral/proinflammatory cytokines IFN-α, TNF, IFN-γ IL-1, IL-6, IL-8, IL-17, and IL-33 in COVID-19 [56,57,58,59,60,61], confirming the association between high IL-6 levels and disease severity [61].