Difference between revisions of "Brucella abortus"
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[[File:Brucelliosis.jpg|right|thumb|250px|<small><center> Swollen caribou “knee” joint due to brucellosis. (Wildlife Alaska | [[File:Brucelliosis.jpg|right|thumb|250px|<small><center> Swollen caribou “knee” joint due to brucellosis. (Wildlife Alaska | ||
2008, Wikimedia commons)</center></small>]] | 2008, Wikimedia commons)</center></small>]] | ||
| − | ''Brucella abortus'' is a species of the ''[[Brucella species - Overview|Brucella]]'' bacteria genus and causes [[Brucellosis - Cattle|bovine brucellosis]]. | + | ''Brucella abortus'' is a species of the ''[[Brucella species - Overview|Brucella]]'' bacteria genus and causes [[Brucellosis - Cattle|bovine brucellosis]]. It mainly affects cattle, where transmission is by ingestion and abortion occurs in the last half of pregnancy. The placenta is covered by fibrinonecrotic tissue and the foetus often shows bronchopneumonia. |
| − | ''B.abortus'' uncommonly localises in joints, usually in '''carpal bursitis (hygroma)''' in cattle and '''bursitis''' in horses. | + | ''B.abortus'' uncommonly localises in joints, usually in '''carpal bursitis (hygroma)''' in cattle and '''bursitis''' in horses. Also in spleen and lymphatic tissue of non-pregnant animals. It has been isolated from closed cases of [[Bursae and Tendons Inflammatory - Pathology#Poll Evil and Fistulous Withers|poll evil and fistulous withers]] in horses. |
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==Control== | ==Control== | ||
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[[Category:To_Do_-_AimeeHicks]] | [[Category:To_Do_-_AimeeHicks]] | ||
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Revision as of 15:19, 23 July 2010
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Brucella abortus is a species of the Brucella bacteria genus and causes bovine brucellosis. It mainly affects cattle, where transmission is by ingestion and abortion occurs in the last half of pregnancy. The placenta is covered by fibrinonecrotic tissue and the foetus often shows bronchopneumonia.
B.abortus uncommonly localises in joints, usually in carpal bursitis (hygroma) in cattle and bursitis in horses. Also in spleen and lymphatic tissue of non-pregnant animals. It has been isolated from closed cases of poll evil and fistulous withers in horses.
Control
Vaccination of heifers against B. abortus in endemic regions by Strain S19, a live attenuated vaccine, stimulating a cell-mediated immune response. The vaccination of young animals interferes with serological testing. The 45/20 bacterin vaccine is less effective and the newer RB51 vaccine has no LPS O-antigen therefore not detected by serological tests and gives good protection.