The Widal test is used to diagnose
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typhoid fever
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Bell's palsy
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malaria
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Lyme disease
A
Correct answer
Explanation
The Widal test is used to diagnose typhoid fever. It is a test whereby bacteria that causes typhoid fever are mixed with serum containing specific antibodies obtained from an infected individual. It is a presumptive serological test for enteric fever or undulant fever.