The Widal Test is a serological test used to diagnose enteric fever or typhoid fever caused by Salmonella bacteria. Named after Georges-Fernand Widal, who developed the test in 1896, it remains a critical tool in diagnosing typhoid fever, especially in regions where the disease is prevalent. This article provides a detailed overview of the Widal test, including its purpose, procedure, interpretation, and limitations.What is the Widal Test?The Widal test detects antibodies (agglutinins) in a patient's serum against the O and H antigen...
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