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*Bovine brucellosis:
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{{unfinished}}
**Caused by ''Brucella abortus''
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**Eradicated in many countries including UK
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**Infection usually by ingestions but also venereal, skin abrasions, inhalation, transplacental
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**Abortion storms in susceptible herds
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**Abortion after fifth month of gestation due to placentitis
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**Brucellae excreted in foetal fluids for 2-4 weeks following abortion and at subsequent parturitions without abortion
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**Infection of mammary glands and lymph nodes persists for years
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**Excreted intermittently in milk for years
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**Seminal vesicles, ampullae, testicles and epididymus infected in bulls; necrotising orchitis
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**Decreased fertility in cows and bulls; decreased milk production
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**Localisation in [[Spleen - Anatomy & Physiology|spleen]] and lymphatic tissue of non-pregnant animals
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**Occasionally causes [[Joints Inflammatory - Pathology#In Cattle|arthritis]]
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*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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[[File:Brucelliosis.jpg|right|thumb|250px|<small><center> Swollen caribou “knee” joint due to brucellosis. (Wildlife Alaska
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2008, Wikimedia commons)</center></small>]]
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**'''''[[Brucella abortus]]'''''
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''Brucella abortus'' is a species of the ''Brucella'' bacteria genus and causes [[Bovine brucellosis]].
***Uncommonly localises in joints
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***Usually in '''carpal bursitis (hygroma) in cattle and bursitis in horses'''
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''B.abortus'' uncommonly localises in joints, usually in '''carpal bursitis (hygroma) in cattle and bursitis in horses'''.
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Affects cattle, transmission is by ingestion and abortion occurs in last half of pregnancy. Placenta is covered by fibrinonecrotic tissue. Foetus often shows bronchopneumonia.  
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It affects cattle, 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.  
    
[[Category:Brucella species]]
 
[[Category:Brucella species]]
 
[[Category:Cattle]]
 
[[Category:Cattle]]
 
[[Category:To_Do_-_Bacteria]]
 
[[Category:To_Do_-_Bacteria]]
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