High cumulative JC virus seroconversion rate during long-term use of natalizumab. Vennegoor A, van Rossum J, Leurs C, Wattjes MP, Rispens T, Murk JLAN, Uitdehaag BMJ, Killestein J Eur J Neurol. 2016 Mar 27. PMID: 27018481. Abstract CommentRecommendBookmarkWatch