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Regarding your question

What is the widal test?

•   serological test which is used for the diagnosis of enteric fever or typhoid fever 
• Typhoid or enteric fever is caused by a gram negative bacteria Salmonella enterica (Salmonella Typhi or Salmonella Paratyphi), found in the intestine of man. Salmonella paratyphi also causes Typhoid but of a milder form
• The Widal test is used to detect specific antibodies in the serum sample of patients suffering from typhoid using antigen-antibody interactions. These specific antibodies can be detected in the patient’s serum after 6 days of infection

interpretation of Widal test?

• Antibody titre greater than 1 : 80 is considered significant and usually suggests positive test for Salmonella infection.
• Low titres are often in normal individuals
• Widal test may be falsely positive in patients who have had previous vaccination or infection with S.Typhi.
• Widal test cannot distinguish between a current infection and a previous infection or vaccination against typhoid.

Sign and symptoms of typhoid fever?

• Patient has a fever and the pattern of the fever is typical.
• Fever is persistent and does not touch normally. This may be as high as 103 to 104 F.
• May have stomach pains, headache, or loss of appetite.
• In some cases, patients have a rash of flat type and rose-colored spots

 You should be examined by doctor to diagnose the enteric fever before treatment plan
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