[Reproduction of Brucella titers in swine using experimental infection with Yersinia enterocolitica, serotypes 0:9 and 0:6].

Measurable Brucella titres were produced by slow agglutination, slow agglutination at 57 degrees C (heat test), and complement fixation reaction with Brucella antigen in infection experiments with gilts in which Yersinia enterocolitica Serotypes 0:9 and 0:6 were used. Slow agglutination gave brucellosis titres up to 1:1280 and titres against Yersinia enterocolitica, Serotype 0:9, up to 1:20480. The antibody titres stayed persistent throughout the 80 days of the experiment. Yersinia enterocolitica infection was found to be transmissible between the animals. Aspects relating to the development and course of the infection as well as to pathogen detection are discussed.