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Weil Felix Reaction

It is a heterophile agglutination test used for the serodiagnosis of typhus fever. It is based on the principle that the agglutinins present in the serum of patients
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Brill-Zinsser disease

 Brill-Zinsser disease is  the recrudescence of epidemic typhus in persons who  earlier suffered from the disease. It is characterised by fever, transient rash and fall in blood pressure. It
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