Serologic responses in diagnostic tests for brucellosis in cattle vaccinated with Brucella abortus 19 or RB51

Author:

Stevens M G1,Hennager S G1,Olsen S C1,Cheville N F1

Affiliation:

1. Brucellosis Research Unit, U.S. Department of Agriculture, Ames, Iowa 50010.

Abstract

Serologic responses in the particle concentration fluorescence immunoassay and the card, complement fixation, and tube agglutination tests were measured for 10 weeks after vaccination of cattle with either Brucella abortus 19 or the lipopolysaccharide O-antigen-deficient mutant, strain RB51. The responses of strain 19-vaccinated cattle were positive, whereas those of strain RB51-vaccinated cattle were negative, in all of the tests. These results indicate that cattle vaccinated with strain RB51 fail to produce antibodies that can be detected by conventional serologic tests that are used to diagnose bovine brucellosis.

Publisher

American Society for Microbiology

Subject

Microbiology (medical)

Reference11 articles.

1. Alton G. G. L. M. Jones R. D. Angus and J. M. Verger. 1988. Serologic methods p. 63-134. In Techniques for the brucellosis laboratory. Institut National de la Recherche Agronomique Paris.

2. Bacterial survival, Iymph node changes, and immunologic responses of cattle vaccinated with standard and mutant strains of Brucella abortus;Cheville N. F.;Am. J. Vet. Res.,1992

3. Immune responses and protection against infection and abortion in cattle experimentally vaccinated with mutant strains of Brucella abortus;Cheville N. F.;Am. J. Vet. Res.,1993

4. Enright F. M. 1990. The pathogenesis and pathobiology of Brucella infection in domestic animals p. 301-320. In K. Nielsen and J. R. Duncan (ed.) Animal brucellosis. CRC Press Inc. Boca Raton Fla.

5. MacMillan A. 1990. Conventional serological tests p. 153-197. In K. Nielsen and J. R. Duncan (ed.) Animal brucellosis. CRC Press Inc. Boca Raton Fla.

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