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': 'Which of the following diseases is not transmitted by fleas? \nSelect and explain. \nA. Plague, B. Endemic typhus, C. Chiggerosis, D. Trench fever', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Diseases transmitted by fleas include: Plague Endemic typhus Chiggerosis Hymenolepis diminuta. Ref: Park 21st edition page: 719.', 'role': 'assistant'}]