brucella ovis brucella ovis brucella ovis is a gram-negative coccobacillus from the brucellaceae family. along with brucella melitensis, it is responsible for causing ovine brucellosis, which is a notifiable disease. b. ovis can be transmitted by the stable fly. infection causes severe inflammation of the epididymis, particularly the tail. brucella ovis scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: brucellaceae genus: brucella species: b. ovis binomial name brucella ovis