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Table 1 Comparison of VNT and PRNT assays for a panel of 142 samples

From: Combination of ELISA screening and seroneutralisation tests to expedite Zika virus seroprevalence studies

  PRNT50 PRNT90
VNT Positive (titre≥10) Negative (titre< 10) Positive (titre≥10) Negative (titre< 10)
Positive  (titre≥40) 51 1 51 1
Negative (titre<40) 9 81 1 89
Sensitivity of VNT
(95% CI)
85% (51/60)
(72.9–92.4%)
98.1% (51/52)
(88.4–99.9%)
Specificity of VNT
(95% CI)
98.7% (81/82)
(92.4–99.9%)
98.8% (89/90)
(93.1–99.9%)