Difference between revisions of "Brucella abortus"

Revision as of 21:09, 10 May 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

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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.
-''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==
-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:Expert_Review]]

Difference between revisions of "Brucella abortus"

Revision as of 21:09, 10 May 2010

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