OCCUPATION AND HEALTH ›› 2026, Vol. 42 ›› Issue (15): 2043-2047.

• Treatise—Experiment·Monitoring and Inspection • Previous Articles     Next Articles

Quantitative detection of Noroviruses in school epidemic by dual fluorescence digital PCR

FENG Yaoji, SU Yan, SU Wenzhang, LUO Lin, DENG Jielin   

  1. Foshan Nanhai Center for Disease Control and PreventionFoshanGuangdong 528200, China
  • Received:2025-04-29 Revised:2025-09-29 Online:2026-08-01 Published:2026-07-16

Abstract:

Objective To establish a dual-fluorescence reverse transcription droplet digital polymerase chain reaction(RT-ddPCR) quantitative detection method for the epidemic determination of Norovirus(GⅠ and GⅡ) outbreaks in schools. Methods Based on the samples of the Norovirus epidemic in schools,primers and probes were selected,the reaction system was optimized,the appropriate annealing temperature and detection range were determined,and a dual fluorescence RT-ddPCR quantitative detection method for Norovirus was established. Results The annealing temperature of the method was 58 ℃ with a linear range of 5.0-1.0×104 copies/μL. The correlation coefficient was 0.998,the limit of detection was 2.0 copies/μL,the limit of quantification was 5.0 copies/μL,and the relative standard deviation(RSD) was 2.1%-21.5%. Conclusion The RT-ddPCR quantitative detection method for the Norovirus has the advantages of strong specificity,high sensitivity and low detection limit,which is suitable for the quantitative determination of Norovirus(GⅠ and GⅡ) epidemic in schools.

Key words: Digital PCR, Norovirus, Quantitative detection, School

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