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  • Title: Evaluation of tests employed in serological diagnosis of brucellosis caused by Brucella ovis.
    Author: Cerri D, Ebani VV, Pedrini A, Bassi S, Bey RF, Andreani E, Farina R.
    Journal: New Microbiol; 2000 Jul; 23(3):281-8. PubMed ID: 10939043.
    Abstract:
    A survey was carried out to verify the sensitivity and specificity of various tests (complement fixation test--CF; agar gel immunodiffusion--AGID; indirect enzyme linked immunosorbent assay--ELISA; immunoblotting--IB) employed in the serological diagnosis of brucellosis caused by Brucella ovis. The tests were executed on 44 blood serum samples of rams coming from B. ovis-free flocks, 75 of B. ovis experimentally infected rams and 1139 from rams living in flocks where B. ovis had been previously isolated. All tests were performed using B. ovis hot saline extract (HS) as antigen. Sensitivity results were 97.4% for IB, 98.68% for CF, 100% for AGID and ELISA; specificity was 100% for all methods. Concordance values were 89.62% (CF-AGID), 78.77% (CF-ELISA), 77.74% (AGID-ELISA), 65.45% (IB-CF), 62.93% (IB-ELISA), 67.24% (IB-AGID). IB identified antibodies to antigenic components with molecular weight of 67, 63, 58, 55, 38, 35, 32, 30, 28, 25, 23, 21, 20-18 kDa (proteins) and 15-12 kDa (rough lipopolysaccharide).
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