Comparison of sensitivity and specificity of IgA enzyme linked immunosorbent assay (ELISA) and O and H agglutinins of the Widal test for culture confirmed typhoid (n=29) and febrile (n=51) cases
| O agglutinin | H agglutinin | ||||
|---|---|---|---|---|---|
| Diagnostic accuracy | IgA ELISA | 1/240 | 1/480 | 1/120 | 1/240 |
| Sensitivity | 83% | 89.7% | 69% | 65.5% | 51.7% |
| Specificity | 92.2% | 31.4% | 74.5% | 90.0% | 96% |