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': 'Regarding Campylobacter jejuni not true is ? \nSelect and explain. \nA. Most common cause of Campylobacteriosis, B. Poultry is the cause of the disease, C. Human is the only reservoir, D. Causes Gillian barrie syndrome', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e. Human is the only reservoir Animals are the main reservoir of C. jejuni( not human). It is a zoonosis. CAMPYLOBACTER Morphology . Gram negative . Comma shaped . Motile with a single polar flagellum --> Daing or tumbling motility . Non capsulated . Nonsporing Culture . Growth occurs under microaerophilic conditions (5% 02,10% CO2 and 85% N2). . Thermophilic, growing at 42degC (Can grow at 37degC, but incubation at higher tempratures suppresses normal fecal flora.) Biochemical reactions . Do not ferment carbohydrate . Catalase and oxidase positive . Nitrate reduction positive Pathogenicity Diarrhea! disease . C. jejuni is the most common cause . It is a zoonosis . The source is food of animal origin, especially raw milk.", 'role': 'assistant'}]