Difference between revisions of "Brucella abortus"

Revision as of 11:10, 1 July 2010

Bovine brucellosis:
- 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 and lymphatic tissue of non-pregnant animals
- Occasionally causes arthritis
Isolated from closed cases of poll evil and fistulous withers in horses

- Brucella 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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-{{OpenPagesTop}}
+*Bovine brucellosis:
-{{Taxobox
+**Caused by ''Brucella abortus''
-|name               =''Brucella abortus''
+**Eradicated in many countries including UK
-|phylum             =Proteobacteria
+**Infection usually by ingestions but also venereal, skin abrasions, inhalation, transplacental
-|class              =Alpha Proteobacteria
+**Abortion storms in susceptible herds
-|order              =Rhizobiales
+**Abortion after fifth month of gestation due to placentitis
-|family             =Brucellaceae
+**Brucellae excreted in foetal fluids for 2-4 weeks following abortion and at subsequent parturitions without abortion
-|genus              =Brucella
+**Infection of mammary glands and lymph nodes persists for years
-|species            =''B.abortus''
+**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
-[[File:Brucelliosis.jpg|right|thumb|250px|<small><center> Swollen caribou “knee” joint due to brucellosis. (Wildlife Alaska
-, Wikimedia commons)</center></small>]]
-''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.
+**'''''[[Brucella abortus]]'''''
+***Uncommonly localises in joints
+***Usually in '''carpal bursitis (hygroma) in cattle and bursitis in horses'''
-''B.abortus'' uncommonly localises in joints, usually in [[Capped Joints|'''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|poll evil and fistulous withers]] in horses.
-==Control==
+Affects cattle, transmission is by ingestion and abortion occurs in last half of pregnancy. Placenta is covered by fibrinonecrotic tissue. Foetus often shows bronchopneumonia.
-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.
-{{Learning
-|literature search = [http://www.cabdirect.org/search.html?rowId=1&options1=AND&q1=%22Brucella+abortus%22&occuring1=title&rowId=2&options2=AND&q2=&occuring2=freetext&rowId=3&options3=AND&q3=&occuring3=freetext&publishedstart=2000&publishedend=yyyy&calendarInput=yyyy-mm-dd&la=any&it=any&show=all&x=43&y=8 ''Brucella abortus'' publications since 2000]
-}}
-{{OpenPages}}
 [[Category:Brucella species]]
+[[Category:Cattle]]
+[[Category:To_Do_-_Bacteria]]
-[[Category:Expert_Review]]

Difference between revisions of "Brucella abortus"

Revision as of 11:10, 1 July 2010

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