A member asked:

M:33yr, high fever, high bp patient.s.typhi "to" 1:80, s.typhi "th" 1:40, s.paratyphi "ah" 1:20, s.paratyphi "bh"1:20, method:slide agglutination-typhiod?

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Typhoid: A single widal test in an unvaccinated patient showing h and/or o titres greater than or equal to 1:160 and typhoid-like symptoms is strongly suggestive of typhoid fever. It also appears that h titre is more useful than o titre. More false positives are found than false negatives. Under these circumstances, the clinical picture is the decisive factor in making a diagnosis of typhoid.

Answered 3/21/2016

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What causes typhoid fever, and how long is one contagious?

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