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 Probable cause of food poisoning in a child who has eaten Ice Cream 16-18 hrs earlier is ? \nSelect and explain. \nA. Staph aureus, B. Clostridium perfringens, C. Clostridium botulinum, D. Salmonella typhimurium', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Salmonella typhimurium . Food poisoning 16-18 hrs after eating ice cream suggests S.typhimurium food poisoning. . Lets see each option - Staph aureus food poisoning has incubation period less than 6 hours. - Clostridium perfringens food poisoning has incubation period less than 16 hours. - Now two options are left - Cl. botulinum and salmonella typhimurium both can have incubation period > 16 hours. - Food sources responsible for botulism are home preserved foods such as home-canned vegetables, smoked or pickled fish, home-made cheese and similar home made food. - Salmonella typhimurium food poisoning occurs after eating contaminated meat, milk and milk products (ice cream), sausages, custards, eggs and egg products.", 'role': 'assistant'}]