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. 1999 Mar 1;40(1):69–74. doi: 10.1186/BF03547042

Serum Antibodies to Bovine Coronavirus in Swedish Sheep

Serumantikroppar mot bovint Coronavirus hos svenska får

M Tråvén 1,✉, U Carlsson 1, A Lundén 2, B Larsson 3
PMCID: PMC8043158  PMID: 10418197

Abstract

Altogether 218 sheep sera from 40 flocks in different parts of Sweden were screened for antibodies to bovine Coronavirus (BCV). Nineteen per cent of the sera were positive and there was a significantly higher frequency (p<0.05) of at least one positive sample in flocks with more than 100 adult sheep than in smaller flocks. There was also a significantly higher frequency (p<0.001) of positive samples from sheep older than 4 years than from younger ones. Only a weak relationship between BCV positivity (2 or more positive samples, p<0.05) and cattle contact was demonstrated in this study. Possible transmission routes and other factors that could have affected the result are discussed. In light of our finding that all 5 sheep experimentally exposed to BCV through contact with infectious cow faeces seroconverted, we conclude that the antibodies found in Swedish sheep are probably the result of BCV infections directly or indirectly transmitted from cattle.

Keywords: survey, flock size, age, cattle contact, experimental infection, seroconversion

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