Specificity and application of a norovirus detection method based on receptor capturing / 中华实验和临床病毒学杂志

ABSTRACT

Objective@#To evaluate of the specificity of a new norovirus (NoV) detection method of in situ capture real-time quantitative reverse transcription polymerase chain reaction (ISC-RT-qPCR) and to apply the method for the detection of NoVs in fresh strawberry.@*Methods@#A panel of stool samples with different NoV genotypes and various inoculums were used for the experiments.@*Results@#We found that all the tested samples of eight genogroup Ⅱ (GⅡ) NoVs could be detected specifically by ISC-RT-qPCR. Moreover, in contrast to the conventional RT-qPCR method , the situation that the Ct value increased as the inoculum of NoV GⅡ decreased was not shown using ISC-RT-qPCR. When we tested NoVs in strawberry samples by ISC-RT-qPCR, the minimum test limit could reach 1.36 genocopy/10 g of fresh strawberry.@*Conclusions@#ISC-RT-qPCR is an effective and specific technic and it could be applied for the detection of infectious NoVs from stool samples and fresh strawberry samples.