DAO 67:25-29 (2005)  -  doi:10.3354/dao067025

Assessment of commercial test kits for identification of spring viraemia of carp virus

P. F. Dixon*, C. B. Longshaw

CEFAS Weymouth Laboratory, Barrack Road, The Nothe, Weymouth, Dorset DT4 8UB, UK

ABSTRACT: Two test kits for the identification of spring viraemia of carp virus (SVCV), one an enzyme-linked immunosorbent assay (ELISA) using a rabbit polyclonal antiserum, and the other an indirect fluorescent antibody test (IFAT) using a mouse monoclonal antibody, were assessed for specificity using a range of virus isolates. The test viruses were selected from 4 recently described genogroups of piscine rhabdoviruses: Genogroup I (SVCV), Genogroup II (grass carp rhabdovirus), Genogroup III (pike fry rhabdovirus) and Genogroup IV (‘tench rhabdovirus’). The test viruses included SVCV isolates from all 4 subgroups of Genogroup I. The ELISA was non-specific for these viruses and did not distinguish between SVCV and isolates from the other 3 Genogroups. However, the IFAT was too specific and detected SVCV isolates from only 1 of the 4 SVCV subgroups. Reliance on these test kits alone could result in misidentification of this OIE notifiable disease.

KEY WORDS: SVCV · IFAT · ELISA · Serological comparison · Identification

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