ABSTRACT
Results listing the identification of brucella isolates received by the National Brucellosis Reference Centre, National Biological Standards Laboratory, Canberra from 1981 to 1985 are presented. The distribution of brucella species and biotypes is shown on a host and state basis. Cultures isolated in Australia were identified as Brucella abortus biotypes 1, 2 and 4, and Strain 19; B. suis biotype 1, and B. ovis. B. melitensis biotype 3 was recovered from man infected in the Mediterranean area. B. abortus biotype 1 was the most frequent isolate. Atypical cultures isolated from cattle included B. suis biotype 1, and erythritol-utilising mutants of Strain 19. The epizootiological implications of these findings are discussed in relation to their impact on the national campaign to eradicate bovine brucellosis.
Subject(s)
Brucella/classification , Brucellosis, Bovine/epidemiology , Brucellosis/epidemiology , Sheep Diseases/epidemiology , Swine Diseases/epidemiology , Animals , Australia , Brucella/isolation & purification , Brucella abortus/classification , Brucella abortus/isolation & purification , Brucellosis/microbiology , Brucellosis/veterinary , Brucellosis, Bovine/microbiology , Cattle , Humans , Sheep , Sheep Diseases/microbiology , Swine , Swine Diseases/microbiologyABSTRACT
An adjuvant vaccine was prepared from an Australian isolate of Campy-lobacter fetus subsp fetus biotype intermedius and injected into 23 virgin Guernsey heifers. Ten nonvaccinated animals served as controls. When challenged by the intravaginal route with a culture of either the homologous strain or biotype venerealis, weekly swabs from the anterior vagina continued to yield either biotype in 8 of 10 nonvaccinates at 6 weeks as compared with 3 of 23 vaccinates. Serology in vaccinated heifers and rabbits showed that the vaccine produced high titres of antibody against both homologous and heterologous strains.
