National Swine brucellosis survey.

A national survey was conducted in 1985 to investigate the brucellosis status of the Canadian swine herd. Serum samples were collected from cull sows slaughtered over a forty week period in 1985; 15,707 samples were suitable for brucellosis testing, and 48 (0.31%) gave some degree of reaction on the buffered plate agglutination screening test. All 48 samples were negative on the 2-mercaptoethanol and modified complement fixation test. We therefore conclude that the Canadian swine herd remains free of brucellosis.