Polyomavirus detection in multiple sclerosis patients under natalizumab therapy: Profile and frequency of urinary shedding. Nali L H, Fink M C, do Olival GS, Moraes L, Callegaro D, Tilbery C P, Vidal J E, Sumita L M, de Oliveira A PC, Romano CM J Med Virol. 2016 Jul 28. PMID: 27464945. Abstract CommentRecommendBookmarkWatch