This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': '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 ? \nSelect and explain. \nA. Pasteurella spp, B. Francisella spp, C. Bartonella spp, D. Brucella spp', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Points in favor of Brucellosis:\n\nVeterinary doctor: Occupational exposure to infected animals\nOrganism could grow only in special laboratory media\nOxidase positive Gram-negative short bacilli\nBrucellosis is one of the common cause of PUO', 'role': 'assistant'}]