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: Microbiology
[{'content': 'Weil felix reaction with OXK antigen indicates infection with - \nSelect and explain. \nA. R. tsutsugamushi, B. R. Mooseri, C. R. Quintana, D. R. Akari', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., R. tsutsugamushi", 'role': 'assistant'}]