Seroconversion and Abortion in Cattle Experimentally Infected with Brucella sp. Isolated from a Pacific Harbor Seal (Phoca Vitulina Richardsi)
Autor: | Steven G. Hennager, Thomas Gidlewski, Steven C. Olsen, Jack C. Rhyan, Dyanna M. Lambourne, Darla R. Ewalt |
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Rok vydání: | 2001 |
Předmět: |
0301 basic medicine
Veterinary medicine Seals Earless 040301 veterinary sciences Brucella abortus Brucella Abortion Phoca 0403 veterinary science Brucellosis Bovine 03 medical and health sciences Marine mammal Pregnancy Disease Transmission Infectious Animals Serologic Tests Seroconversion reproductive and urinary physiology General Veterinary biology Inoculation Pregnancy Outcome 04 agricultural and veterinary sciences Abortion Veterinary bacterial infections and mycoses biology.organism_classification 030104 developmental biology Brucella ceti Harbor seal Cattle Female |
Zdroj: | Journal of Veterinary Diagnostic Investigation. 13:379-382 |
ISSN: | 1943-4936 1040-6387 |
Popis: | Previously unrecognized Brucella species have been isolated from a number of marine mammals, including harbor seals ( Phoca vitulina richardsi) in the Puget Sound area of the state of Washington. Because of the presence of dairy herds in proximity to the harbor seal populations, a study was conducted to determine the effects of the harbor seal Brucella isolate in experimentally inoculated cattle. Six pregnant cattle were exposed by intravenous injection ( n = 3) or intraconjunctival inoculation ( n = 3). Two pregnant cows were intravenously injected with saline and served as controls. All of the cows receiving the Brucella seroconverted on 1 or more tests commonly used for the detection of Brucella abortus infection. Two of the cattle receiving the intravenous inoculation aborted, and brucellae were demonstrated in the fetuses and dams immediately following abortion. The remaining 4 Brucella-inoculated animals and their fetuses were culture negative for the organism at 14 weeks postinoculation. Results of this study indicate the marine mammal Brucella is capable of producing seroconversion and abortion in cattle but is less pathogenic in that species than B. abortus. |
Databáze: | OpenAIRE |
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