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: Social & Preventive Medicine
[{'content': 'Vi polysaccharide vaccine for typhoid is administered by which route? \nSelect and explain. \nA. Oral, B. IM, C. IV, D. Intradermal', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Vi polysaccharide vaccine for typhoid is recommended in children more than 2 years of age. It is administered as a single dose subcutaneously or intramuscularly. Ref: Park 21st edition, page 215.', 'role': 'assistant'}]