Bovine brucellosis in two southern states of Nigeria; II. The incidence and implications of infection in range cattle.
D000034:Abortion, Veterinary / Q000453:epidemiology; D000818:Animals; D002007:Brucellosis, Bovine / Q000453:epidemiology*; D002417:Cattle; D005260:Female; D009549:Nigeria; D011247:Pregnancy