Performance according to the type of serum samples | ZIKV IgG-ELISA result | % (95% CI) | |
---|---|---|---|
Sensitivity | Positive | Negative | |
Acute-phase samples of RT-PCR-confirmed Zika casesa | 6 | 4 | 40.0 (12.2–73.8) |
Convalescent-phase samples of RT-PCR-confirmed Zika cases | 8 | 0 | 100.0 (63.1–100.0) |
Specificity | Negative | Positive | |
Convalescent-phase samples of RT-PCR-confirmed dengue casesb | 15 | 40 | 27.3 (16.1–41.0) |
Samples of DENV-1 infected cases | 9 | 11 | 45.0 (23.1–68.5) |
Samples of DENV-2 infected cases | 5 | 13 | 27.8 (9.7–53.5) |
Samples of DENV-4 infected cases | 1 | 16 | 5.9 (0.2–28.7) |
Samples of primary dengue cases | 12 | 1 | 92.3 (64.0–99.8) |
Samples of secondary dengue cases | 3 | 39 | 7.1 (1.5–19.5) |
Blood donors samplesc | 9 | 11 | 45.0 (23.1–68.5) |