Grygorczuk et al. (2018) analyzed IL-8, IL-17A, IL-17F and IL-22 patterns in a small cohort of TBE patients (n = 36 for IL-8, n = 15 for other), non-TBE aseptic meningitis patients (n = 6) and non-meningitis controls (n = 7) [16]. This evidence concerns the gene IL17F and meningitis.