Epstein Barr virus is not a characteristic feature in the central nervous system in established multiple sclerosis. Peferoen LAN, Lamers F, Lodder LNR, Gerritsen WH, Huitinga I, Melief J, Giovannoni G, Meier U, Hintzen RQ, Verjans GMGM, et al. Brain. 2010 May; 133(Pt 5):e137. PMID: 19917644. Abstract CommentRecommendBookmarkWatch