| a survey of viral diseases in farmed and feral salmonids in switzerland. | a field survey was carried out to study the occurrence and distribution of viruses causing diseases of major impact in fish farming, namely viral haemorrhagic septicaemia (vhs), infectious haematopoietic necrosis (ihn) and infectious pancreatic necrosis (ipn) in farmed and wild fish in switzerland. the presence of vhs virus (vhsv), ihn virus (ihnv) and ipn virus (ipnv) in the tissue samples was tested by virus isolation in cell cultures, and subsequent virus identification by immunofluorescence. ... | 2003 | 12962226 |