title: Serological status of Canadian cattle for brucellosis, anaplasmosis, and bluetongue in 2007-2008.
abstract: A national bovine serological survey was conducted to confirm that the prevalence of brucellosis, bluetongue, and anaplasmosis does not exceed 0.02% (95% confidence) in live cattle in Canada. Sampling consisted of a systematic random sample of 15 482 adult cattle slaughtered in federally inspected abattoirs, stratified by province. Samples were tested to detect antibodies for brucellosis, bluetongue, and anaplasmosis. All samples were negative for brucellosis. Three samples were seroreactors to bluetongue, 2 of which originated from the Okanagan Valley in British Columbia and 1 from Ontario, which after follow-up, was considered an atypical result. A total of 244 samples were seroreactors to Anaplasma and follow-up identified infection in Saskatchewan, Manitoba, and Quebec. In conclusion, the Canadian cattle population remains free of brucellosis and free of bluetongue outside the Okanagan Valley. Canada is no longer free of anaplasmosis and will be unable to claim freedom until eradication measures are completed.
authors: Epidemiology and Surveillance Section, Terrestrial Animal Health Division, Canadian Food Inspection Agency, St-Hyacinthe, Quebec. julie.pare@inspection.gc.ca
authors: Julie
authors: J
authors: Paré
authors: Dorothy W
authors: DW
authors: Geale
authors: Maria
authors: M
authors: Koller-Jones
authors: Kathleen
authors: K
authors: Hooper-McGrevy
authors: Elizabeth J
authors: EJ
authors: Golsteyn-Thomas
authors: Christine A
authors: CA
authors: Power
mesh_terms: D000712:Anaplasmosis / Q000453:epidemiology*; D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D000914:Antibodies, Viral / Q000097:blood; D001819:Bluetongue / Q000453:epidemiology*; D002007:Brucellosis, Bovine / Q000453:epidemiology*; D002170:Canada / Q000453:epidemiology; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D005260:Female; D008297:Male; D016036:Seroepidemiologic Studies
chemical_list: D000907:Antibodies, Bacterial; D000914:Antibodies, Viral