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
For all of the following Weil Felix reaction is diagnostic except - 
Select and explain. 
A. Endemic typhus, B. Scrub typhus, C. Epidemic typhus, D. Q fever
D: Q fever
Answer: D: Q fever 
Explanation: Ans. is d i.e., Q fever