Epidemiological characterization of a pestivirus isolate from a viremic pig out of a mixed pig-cattle herd

Frey, H.R.; Roder, B.; Depner, K.; Liess, B.

Deutsche Tierärztliche Wochenschrift 102(5): 181-183

1995


ISSN/ISBN: 0341-6593
PMID: 8593767
Document Number: 445040
A pestivirus isolated from a healthy pig out of a mixed pig-cattle holding was identified by use of monoclonal antibodies as a porcine virus related or identical to bovine viral diarrhoea (BVD) virus. About 7% of the pigs of this herd showed neutralizing antibodies (nab) against BVD and Border Disease (BD) virus and against the homologous porcine nonclassical swine fever (CSF) pestivirus isolate 10421/Han94. The nab titres against this virus were clearly higher than against CSF virus strain Alfort/287. Amongst the cattle kept in the farm no BVD viraemic animal was detected. About 13% of them showed nab to BVD virus with higher titres against the BVD virus strain NADL than against the porcine pestivirus virus isolate 10421/Han94. There was no indication of a BVD virus transmission from the cattle to the pigs within this herd. The problem of misinterpretation of non-CSF virus isolation from pigs is discussed. The necessity of identifying pestiviruses of porcine origin by use of species-specific monoclonal antibodies is stressed in order to prevent erroneous declarations of CSF outbreaks.

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