
The sera of 25 patients with bacteriological diagnosis of typhoid fever were analyzed to identify and measure the antibodies to S. typhi somatic antigens using the enzyme-linked immunosorbent assay technique (ELISA). The results were positive in all the serologic tests, with titers varying from 1:600 to 1:2500. Development and standardization of the technique, results of the intra-assay and inter-assay tests and their correlation to Widal's reaction are described in detail.
Immunoenzyme Techniques, Adolescent, Humans, Enzyme-Linked Immunosorbent Assay, Typhoid Fever, Antibodies, Bacterial
Immunoenzyme Techniques, Adolescent, Humans, Enzyme-Linked Immunosorbent Assay, Typhoid Fever, Antibodies, Bacterial
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