Difference between revisions of "Brucellosis - Cattle"

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(Redirected page to Bovine Brucellosis)
 
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#REDIRECT[[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
 
 
 
 
 
 
 
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.
 
 
 
 
 
[[Category:To_Do_-_Clinical]]
 

Latest revision as of 15:30, 23 July 2010

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