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: Pediatrics
[{'content': 'Typhoid Vi polysaccharide vaccine is usually administered in children above the age of : \nSelect and explain. \nA. 6 months, B. 1 year, C. 2 years, D. 1 year 6 months', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The Vi polysacchiride vaccine is licensed for individuals aged 2 years because it does not elicit immune response in children less than 2 years.', 'role': 'assistant'}]