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': 'KFD is caused by ? \nSelect and explain. \nA. Flavivirus, B. Myxovirus, C. Alphavirus, D. Phlebovirus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: <p> kyasanur forest disease:- Agent- group B toga virus ( flavivirus). Rats and squirrels- main reservoir Monkeys- amplifier host. Vectors- Haemaphysalis. Age: 20-40 years. Sex- males more Mode of transmission- monkeys and ticks. By th bite of infective ticks. Incubation period- 3-8 days. {Reference: park&;s textbook of preventive and social medicine, 23rd edition, pg no.289}</p', 'role': 'assistant'}]