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J Vet Diagn Invest. 1993 Jan;5(1):26-32.

Application of indirect ELISA for detection of bovine antibodies against vesicular stomatitis viruses.

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Animal Diseases Research Institute, Agriculture Canada, Nepean, ON.


Two indirect enzyme-linked immunosorbent assays (I-ELISAs) are described for the detection of bovine serum antibody to the New Jersey (NJ) and Indiana (IN) vesicular stomatitis viruses (VSV). Serum samples at a dilution of 1:200 were incubated with binary ethylenimine-inactivated VSV-NJ and VSV-IN type-specific antigens preadsorbed to microtiter plates. Bound antibodies were detected by a murine monoclonal antibody to bovine IgG1 conjugated with horseradish peroxidase. The performance of each I-ELISA in detecting homotypic and heterotypic antibodies to VSV-NJ and VSV-IN in sequential serum samples from calves experimentally infected with VSV-NJ or VSV-IN was evaluated. The I-ELISAs detected serotype-specific antibodies to either VSV-NJ or VSV-IN in calves infected with the homologous serotype. Homotypic but not heterotypic anti-VSV-NJ antibodies were first demonstrable by the VSV-NJ I-ELISA during the second week postinfection and remained at an elevated level for a period of 11 weeks, with a gradual decrease thereafter. Similar homotypic antibody profiles measured by the VSV-IN I-ELISA in calves inoculated with VSV-IN were observed. The performances of the I-ELISAs were compared using 1,495 microtiter serum neutralization (MTSN) test-negative bovine field sera collected from cattle in Canada (VS free) and 429 samples collected from cattle in the USA and Mexico (VS-epidemic and VS-endemic areas). The diagnostic specificities of the VSV-NJ and VSV-IN I-ELISAs for the Canadian samples relative to the MTSN test results were in the range of 99.8% and 99.7%, respectively.(ABSTRACT TRUNCATED AT 250 WORDS).

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