Difference between revisions of "Brucella abortus"

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*Bovine brucellosis:
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{{unfinished}}
**Caused by ''Brucella abortus''
 
**Eradicated in many countries including UK
 
**Infection usually by ingestions but also venereal, skin abrasions, inhalation, transplacental
 
**Abortion storms in susceptible herds
 
**Abortion after fifth month of gestation due to placentitis
 
**Brucellae excreted in foetal fluids for 2-4 weeks following abortion and at subsequent parturitions without abortion
 
**Infection of mammary glands and lymph nodes persists for years
 
**Excreted intermittently in milk for years
 
**Seminal vesicles, ampullae, testicles and epididymus infected in bulls; necrotising orchitis
 
**Decreased fertility in cows and bulls; decreased milk production
 
**Localisation in [[Spleen - Anatomy & Physiology|spleen]] and lymphatic tissue of non-pregnant animals
 
**Occasionally causes [[Joints Inflammatory - Pathology#In Cattle|arthritis]]
 
*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>]]
  
**'''''[[Brucella abortus]]'''''
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''Brucella abortus'' is a species of the ''Brucella'' bacteria genus and causes [[Bovine brucellosis]].
***Uncommonly localises in joints
 
***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'''.
  
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]]

Revision as of 12:33, 22 July 2010



Swollen caribou “knee” joint due to brucellosis. (Wildlife Alaska 2008, Wikimedia commons)

Brucella abortus is a species of the Brucella bacteria genus and causes Bovine brucellosis.

B.abortus uncommonly localises in joints, usually in carpal bursitis (hygroma) in cattle and bursitis in horses.

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.