Ichiyama et al. (2005) demonstrated that the concentrations of the cerebrospinal fluid IFN-γ, IL-2, IL-6, and IL-10 were elevated in mumps meningitis, while the concentrations of the cerebrospinal fluid IFN-γ, IL-2, and IL-6 levels were elevated in meningitis. This evidence concerns the gene IL2 and meningitis.