Weil-Felix reaction with OXK antigen indicates infection with
Correct Answer: R. tsustsugamushi
Description: Weil-Felix reaction:
Serological diagnosis of Rickessial infection. Weil-Felix reaction is a Heterophile agglutination test. Antigens used are Nonmotile strains of Proteus vulgaris (OX 19, OX 2), Proteus mirabilis (OX K).
Mechanism: Proteus and Rickessiae will share alkali stable carbohydrate antigen will be basis of the Weil-Felix reaction. Weil-Felix is a tube agglutination test. It is a simple and useful test for the diagnosis. The Antibody rises in 2nd week of illness and reaches the peak and get decline rapidly during the course of convalescence.
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