This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': "All of the following are helpful for elimination of Filariasis, except - \nSelect and explain. \nA. Microfilaris do not multiply in vectors, B. They multiply in humans, C. Larvae are deposited on skin surface where they can't survive, D. NOne", 'role': 'user'}, {'content': "Answer: C \nExplanation: - Man is the definitive host and mosquito the intermediate host in Bancroftian and Brugian filariasis. - humans acquire infection by the bite of mosquito which contain the infective third stage larva. - Adults live in the lymphatic system of host. - The female worms in humans may give bih to as many as 50,000 microfilaria per day.No multiplication in the mosquito. - the extrinsic incubation period is 10-14 days . Reference : Park's textbook of preventive and social medicine, 23rd edition pg no:271 <\\p>", 'role': 'assistant'}]