Reverse Transcription-Booster PCR for Detection of Noroviruses in Shellfish

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Abstract
The methods commonly used for norovirus (NV) detection are based on reverse transcription-PCR (RT-PCR) followed by confirmation of the amplified sequence. To increase sensitivity, an RT-booster PCR was developed. The proposed method showed an increase in sensitivity at least 2 log units for all the NV strains tested compared with the standard RT-PCR method. Higher sensitivity was confirmed in tests on experimentally and naturally contaminated shellfish.