This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
[{'content': 'Weil -felix reaction positive with OXK antigen in - \nSelect and explain. \nA. Trench fever, B. Scrub typhus, C. Endemic typhus, D. Epidemic typhus', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Scrub typhus Weil felix ReactionDiseaseOX-19OX-2OX-KRocky Mountain spotted fever++-Rickettsial pox---Epidemic typhus+--Bril - Zinsser disease+/---Scrub typhus--+Endemic typhus+--Trench fever--_Q fever---", 'role': 'assistant'}]