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infection, the test assesses for host antibodies to the O soma antigen and the H flagellar antigen of the bacteria. False positive and false negative results may occur. Test results need to be interpreted carefully to account for any history of enteric fever, typhoid vaccination, and the general level of antibodies in the populations in endemic areas of the world. As with all serological tests, the rise in antibody levels needed to perform the diagnosis takes 7-14 days, which limits its applicability in early

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