Reply to letter to the editor: "JC viremia and multiple sclerosis" by Focosi et al. Delbue S, Guerini F R, Mancuso R, Caputo D, Mazziotti R, Saresella M, Ferrante P J Neurovirol. 2008 Jan; 14(1):87-88. PMID: 24817821. Abstract CommentRecommendBookmarkWatch