This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Arboviruses, Subject name: Microbiology
[{'content': 'Which of the following is not caused by virus: \nSelect and explain. \nA. Rocky mountain spotted fever, B. KFD, C. Dengue, D. Yellow fever', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Rocky mountain spotted feverRef: Microbiology by Ananthanarayan and Paniker 8th ed. /406, 408, 413DiseaseCausative agentRMSF (Rocky Mountain Spotted Fever)R. RickettsiiKyasanur forest diseaseGroup B togavirus (Flavivirus)DengueArbovirus 4 serotypes (Den- 1,2,3,4)Yellow feverFlavivirus fibricus', 'role': 'assistant'}]