20-year-old boy has admitted with history of fever, icterus, conjunctival suffusion and hematuria for 20 days. Which of the following serological test can be of diagnostic utility:: (A) Widal test, (B) Microscopic agglutination test, (C) Paul-Bunnell-test, (D) Weil-Felix reaction
Answer is B. Ans. is. (b) Microscopic agglutination test