Brucella Scientific Classification and Characteristics

Kingdom: Bacteria, Phylum: Proteobacteria, Class: Alphaproteobacteria, Order: Rhizobiales, Family: Brucellaceae, Genus: Brucella.

Small gram-negative rod-shaped coccobacilli, aerobic, stain red using the modified Ziehl –Neelson method, non-motile, catalase and urease positive, and most isolates are oxidase positive.

Brucella species are obligate parasites with a preferred natural host that serves as a reservoir of infection, and they have a predilection for ungulate placentas, foetal fluids, and testes of bulls, rams, and dogs.

<p>Smooth forms, small, glistening, bluish, and translucent after incubation for 3-5 days, becoming opaque with age, while other species occur in rough forms, with dull, yellowish colonies.</p> Signup and view all the answers

<p>Brucellosis is a zoonosis caused by Brucella, and it affects certain species' reproductive organs. Some species cause undulant fever in humans, and they are differentiated by colonial appearance, biochemical tests, specific cultural requirements, and growth inhibition by dyes.</p> Signup and view all the answers