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  • Title: A comparative study of ELISA and other methods for the detection of Brucella antibodies in bovine sera.
    Author: Van Aert A, Brioen P, Dekeyser P, Uytterhaegen L, Sijens RJ, Boeyé A.
    Journal: Vet Microbiol; 1984 Dec; 10(1):13-21. PubMed ID: 6442027.
    Abstract:
    Enzyme-linked immunosorbent assay (ELISA), using beta-galactosidase and a fluorigenic substrate, was used for the detection of antibodies to Brucella abortus in bovine sera. Among 677 animals from 9 brucellosis-free herds, none reacted in the ELISA. Among 785 animals from 23 brucellosis-infected herds, 336 were positive in ELISA, 229 in the slow agglutination test (SAT), 185 in the complement fixation test (CFT), and 165 in the Rose-Bengal test (RBT). Experimental infections were conducted with two B. abortus strains. Al slaughter on day 101, after intraconjunctival infection of heifers with B. abortus strain 19 organisms, 3 animals were positive in the SAT, 3 in the CFT, 4 in the RBT and 11 in the ELISA, and Brucella organisms could be cultivated from 10 animals; among these, 2 scored positive in the SAT, 3 in the CFT, 3 in the RBT and 8 in the ELISA test. Seventeen heifers were infected with organisms of B. abortus strain 2308. On day 101, 11 heifers were found to be carriers, all of which yielded positive results in the CFT, RBT and ELISA tests, but not in the SAT.
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