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  • Title: Safety of a temperature-sensitive vaccine strain of bovine viral diarrhea virus in pregnant cows.
    Author: Lobmann M, Charlier P, Klaassen CL, Zygraich N.
    Journal: Am J Vet Res; 1986 Mar; 47(3):557-60. PubMed ID: 3008601.
    Abstract:
    Safety tests were conducted in 78 pregnant cows vaccinated with a commercial preparation of a temperature-sensitive vaccine strain of bovine viral diarrhea (BVD) virus. After vaccination, seroconversion was detected in 33 (97%) of 34 cattle that did not have antibodies against BVD virus. Overall, 43 (91%) of 47 cows with prevaccination titers less than or equal to 4 seroconverted. During the test period, cows did not become naturally infected with BVD virus, and BVD-associated reactions to the vaccine were not observed in vaccinated cows. Calves born to vaccinated cows did not have clinical signs of fetal BVD. Precolostral blood samples collected from the progeny of cows that were seronegative at vaccination were free of antibody against BVD virus. Bovine viral diarrhea virus was not isolated from the cattle evaluated in the present study.
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