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===Clinical disease===
===Clinical disease===
*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
*LPS antigen present in virulent as well as some vaccine strains therefore vaccination may confuse serological testing
*LPS antigen present in virulent as well as some vaccine strains therefore vaccination may confuse serological testing
*False positives due to cross-reaction with LPS in other bacteria
*False positives due to cross-reaction with LPS in other bacteria
*Modified Ziehl-Neelson stains reveal organisms in samples from cotyledons, uterine discharge and foetal abomasal contents
*PCR for detection in tissue
*Enriched media for isolation
===Control===
===Control===
*Vaccination:
*Vaccination: