CXCL8 and COVID-19: Circulating cytokines/chemokines and antibodies highlighted the presence of another distinctive patient cluster characterized by paucisymptomatic COVID-19 without cardiovascular involvement, in whom the increase in the levels of inflammatory cytokines was less pronounced and more heterogeneous, and there was an association between certain cytokine and humoral responses, particularly between SARS-CoV-2 IgG Abs and IL-12 and between seasonal beta-coronavirus IgG, IL-8, and TNF-α.