Research Article

Novel Molecular Beacon Probe-Based Real-Time RT-PCR Assay for Diagnosis of Crimean-Congo Hemorrhagic Fever Encountered in India

Table 2

Intra- and interassay variability for the MB rRT-PCR assay on the basis of Cp values. The limit of detection was determined to be 7.6 copies. The assay was able to generate reproducible results with CV of <5% for both intra- and interassay. The intra-assay variability for TaqMan rRT-PCR assay is also shown on the basis of Cp value. For TaqMan assay the limit of detection is 10-fold lower than MB assay.

CCHFV IVT-RNA copiesMB rRT-PCRTaqMan rRT-PCR
Intra-assayInterassayIntra-assay
Mean CpSDCV (%)CV (%)Mean CpSDCV (%)

7.6 × 1097.140.121.682.449.80.353.59
7.6 × 1089.850.030.303.4213.570.493.63
7.6 × 10713.460.080.593.0218.031.085.97
7.6 × 10616.830.050.303.1922.070.934.20
7.6 × 10520.030.241.203.7125.630.250.99
7.6 × 10423.860.050.212.8329.510.431.46
7.6 × 10327.510.210.762.5331.670.290.91
7.6 × 10230.170.280.932.9534.511.644.75
7.6 × 10133.30.772.312.3432.365.8518.09
7.637.040.862.320.46