Here it comes!!

摘要

Four contingents of Canadian FAD trained diagnosticians selected from across Canada spent 3 weeks in Netherlands between April 15 and July 7 1997. 2. AGENT- - pestivirus of Flaviviridae (formerly of Togaviridae) - enveloped ssRNA - closely related to BVD virus of cattle and Border disease virus of sheep -HCV quite resistant to chemical and physical influences