职业与健康 ›› 2026, Vol. 42 ›› Issue (15): 2043-2047.

• 论著—实验·监测与检验 • 上一篇    下一篇

学校疫情中诺如病毒的双重荧光数字PCR定量检测方法

冯耀基, 苏彦, 苏文章, 罗琳, 邓洁琳   

  1. 佛山市南海区疾病预防控制中心广东 佛山 528200
  • 收稿日期:2025-04-29 修回日期:2025-09-29 出版日期:2026-08-01 发布日期:2026-07-16
  • 作者简介:冯耀基,男,副主任技师,主要从事重点传染病监测工作。
  • 基金资助:
    佛山市医学类科技攻关项目(2220001004593);佛山市南海区“十四五”医学特色专科建设项目(2022)

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

摘要:

目的 建立一种适用于学校诺如病毒(GⅠ和GⅡ)聚集性疫情检测的双重荧光逆转录微滴数字聚合酶链式反应(reverse transcription-droplet digital polymerase chain reaction,RT-ddPCR)定量检测方法。方法 根据学校诺如病毒疫情的样品,选定引物、探针,优化反应体系,确定合适的退火温度和检测范围,建立诺如病毒双重荧光RT-ddPCR定量检测方法。结果 诺如病毒双重荧光RT-ddPCR定量检测方法退火温度为58 ℃,检测方法线性范围均为5.0~1.0×104 copies/μL,相关系数(r)0.998,检出限为2.0 copies/μL,定量限为5.0 copies/μL,相对标准偏差(relative standard deviation,RSD)为2.1%~21.5%。结论 本研究建立的诺如病毒双重荧光逆转录微滴数字PCR定量检测方法具有特异性强、灵敏度高、检测限低等优点,适用于学校诺如病毒(GⅠ和GⅡ)疫情的定量检测。

关键词: 数字聚合酶链式反应, 诺如病毒, 定量检测, 学校

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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