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': 'Most of the cases of Listeria are due to serovar \nSelect and explain. \nA. 1, B. 4a, C. 4b, D. 6', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., 4b LISTEROSIS . Mode of transmission; Food borne ---> Most common (most cases are due to serotype 4b) Nosocomial --> In late onset neonatal infection. . Foods implicated in infection include contaminated colesaw, pasteurized milk, soft cheese, pate, ready to eat turkey and pork productes, hot dogs, butter, prepared salads, undercooked chicken.", 'role': 'assistant'}]