CXCL11 and tick-borne encephalitis: Contrary to these findings, the literature data on the expression of CXCL9, CXCL10, and CXCL11 in the CSF of WNND patients are not available, and our results provide the first evidence of the similarities in the expression profile of these three chemokines in the CSF of WNND and TBE patients.