Table 2. Diagnostic performances of the ichroma CHIKV IgG/IgM compared with commercial ELISAs.
| Analyte | TP | FP | FN | TN | Sensitivity% (95% CI) | Specificity% (95% CI) | PPV% (95% CI) | NPV% (95% CI) |
|---|---|---|---|---|---|---|---|---|
| CHIKV-IgG | 36 | 0 | 0 | 163 | 100 (92.4 - 100.0) | 100 (98.3 - 100.0) | 100 (92.4 - 100.0) | 100 (98.3 - 100.0) |
| CHIKV-IgM | 57 | 1 | 0 | 162 | 100 (94.7 - 100.0) | 99.4 (97.5 - 99.4) | 98.3 (93.1 - 98.3) | 100 (98.1 - 100.0) |
CHIKV, Chikungunya virus; TP, true positive; FP, false positive; FN, false negative; TN, true negative; CI, confidence interval; PPV, positive predictive value; NPV, negative predictive value.