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**Infection usually by ingestions but also venereal, skin abrasions, inhalation, transplacental
**Infection usually by ingestions but also venereal, skin abrasions, inhalation, transplacental
**Abortion storms in susceptible herds
**Abortion storms in susceptible herds
**Abortion after fifth month of gestation
**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 and milk production