This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
[{'content': 'A 16-year-old boy is admitted with fever, icterus, conjunctival suffusion and hematuria for 15 days. Which serological test should be done for diagnosis? \nSelect and explain. \nA. Weil-Felix reaction, B. Widal test, C. Paul Bunnel test, D. Microscopic agglutination test', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Microscopic agglutination test is used for diagnosis of Leptospirosis. History of fever with liver(icterus) and kidney(hematuria) involvement should arouse suspicion for leptospirosis (Weil&;s disease). Serotype-specific tests: Microscopic agglutination test Macroscopic agglutination test WIDAL test is used to screen for typhoid fever Weil Felix reaction is used to diagnose rickettsial fevers Paul Bunnell test is the investigation of choice for infectious mononucleosis. Reference: Ananthanarayan and Paniker&;s Textbook of Microbiology Tenth edition', 'role': 'assistant'}]