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': 'Nosocomial infection occurs in hospital in \nSelect and explain. \nA. <12 hours, B. 12-14 hours, C. 24-48 hours, D. >48 hours', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The term hospital infection, hospital-acquired infection or nosocomial infection are applied to infections developing in hospitalized patients, not present or in incubation at the time of their admission.\nSuch infections may become evident during their stay in hospital or, sometimes, only after their discharge.\nInfections are considered nosocomial if they first appear 48 hours or more after hospital admission or within 30 days after discharge.', 'role': 'assistant'}]