IL6 and Epstein-Barr virus infection: We assessed the concentrations of 12 cytokines (IL-5, IFN-α, IL-2, IL-6, IL-1β, IL-10, IFN-γ, IL-8, IL-17, IL-4, IL-12p70, and TNF-α) in peripheral blood from the EBV infection group and healthy control group.