This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Social & Preventive Medicine
[{'content': 'Nosocomial infections are those which develop: \nSelect and explain. \nA. 24 hours after hospitalization, B. Within 48 hours of hospitalization, C. After 48 hours of hospitalization, D. After 7 days of hospitalization', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) After 48 hours of hospitalizationRef.: K. Park 23rd ed. / 94, 359* Nosocomial infections are hospital acquired infections.* It is considered nosocomial if it develops after a minimum of 48 hours of hospitalization.* Most common organism responsible for nosocomial infection: Staph. Aureus.', 'role': 'assistant'}]