Author, Donkey, Bureaucrats, Administrators
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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
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.
==Control==
Test and slaughter program has eradicated bovine brucellosis in the UK.
[[Category:To_Do_-_Clinical]]