Brucella canis Isolates from Canadian Dogs.

The Canadian veterinary journal. La revue veterinaire canadienne (Impact Factor: 0.52). 02/1988; 29(2):149-52.
Source: PubMed


Eleven Brucella canis isolates from Canadian dogs were characterized by dye and antibiotic sensitivity, phage susceptibility, urease and H(2)S production, CO(2) requirement, and reaction with monospecific A,M, and R anti-Brucella antiserum. The isolates could be separated into two distinct groups. One group had a sensitivity pattern similar to that seen with the American type strain RM666, while the other group had a pattern identical to that of a Mexican strain, Mex 51. Epidemiological studies supported contraction of infections in the United States and Mexico respectively. The characteristics of all isolates were stable after repeated subculture indicating that strain differences could serve as useful epidemiological markers and supporting division of the species into two biovars.

Full-text preview

Available from:
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: This study was carried out to determine the incidence of Brucella canis in male dogs with reproductive problems. Fifty-six dogs were chosen from the patient population brought to the Small Animal Hospital of the College of Veterinary Medicine, at the National Autonomous University of Mexico. For the clini- cal reproductive evaluation, semen was collected and a rapid agglutination test and blood culture were performed, as well as a semen culture. Forty sera samples were collected from animals with reproductive problems, eleven from dogs with clinically related problems and 5 from dogs that had a combination of both. Semen was collected by masturbation from 41 of the 56 dogs. Of the 56 dogs, 24 (42.8%) were posi- tive for agglutination test, 3 (5.3%) were positive in blood cultures, and all semen cultures were negative. The main reproductive problems in seropositive dogs were: epididymitis, orchitis and azoospermia. In the blood cultured positive animals, the problems were testicular atrophy, orchitis and epididymitis. In cases that were positive to serology and blood culture, diskospondylitis was present.
    Full-text · Article ·
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: An outbreak of brucellosis caused by Brucella abortus biovar 2 was identified in cattle in Alberta in December 1986. This was the only clinical infection discovered since the national cattle herd was declared brucellosisfree in 1985. It was the first report of B. abortus biovar 2 in Canadian cattle. The outbreak, involving three herds containing purebred Hereford cattle, was spread by the private treaty sale of untested cattle, and was identified following investigation of an abortion. The source of infection for the outbreak was not established, but several possibilities were identified including infected herds present in the area during the mid-1970's, latent infection originating in a Saskatchewan herd during the early 1960's, American cattle imported during the early 1970's, and brucellosis-infected bison in Wood Buffalo National Park. The containment and elimination of this nidus of infection appears to have been successful, and the national cattle herd at the time of writing is free of the disease.
    Preview · Article · Nov 1989 · The Canadian veterinary journal. La revue veterinaire canadienne
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: An experiment was conducted to determine if cattle could be infected with a strain of Brucella abortus biovar 1 isolated from a bison in Wood Buffalo National Park. Three pregnant cows inoculated conjunctivally with 5.7 x 10(8) cfu of the bacterium, and their subsequent calves, showed seroconversion on standard serological tests for bovine brucellosis, and large numbers of the bacterium were isolated from numerous tissues at necropsy. A 4th cow that was moved into the pen that previously contained the inoculated cows subsequently showed seroconversion, and the same strain of B. abortus biovar 1 was isolated from numerous tissues. Although this strain from bison in Wood Buffalo National Park has existed in isolation from cattle for over 60 years, it remains infectious and contagious for cattle.
    Preview · Article · Aug 1996 · The Canadian veterinary journal. La revue veterinaire canadienne
Show more