This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and health, Subject name: Social & Preventive Medicine
[{'content': 'All of the following diseases are transmitted by mosquito vectors except- \nSelect and explain. \nA. West Niler fever, B. Brugian filariasis, C. Babesiosis, D. Rift valley fever', 'role': 'user'}, {'content': "Answer: C \nExplanation: West Nile fever- Culex mosquito Brugian filariasis- Mansonian mosquito Babaesiosis- hard ticks Riftvalley fever- Aedes mosquito. Park's Textbook of Preventive and Social Medicine, 25th Edition, Pg 832", 'role': 'assistant'}]