A veterinary doctor had pyrexia of unknown origin His blood culture in special laboratory media was positive for gram negative short bacilli which was oxidase positive. Which one of the following is the likely organism grown in culture ?
Correct answer: D. Brucella spp
- A. Pasturella spp
- B. Francisella spp
- C. Bartonella spp
- D. Brucella spp
Explanation
Brucella is a small Gram-negative coccobacillus associated with animal exposure and is oxidase positive, often requiring special culture conditions. Francisella is also a fastidious zoonotic organism but is typically oxidase negative, making Brucella the best choice.
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