使用实时逆转录酶PCR试验跟踪SARS-CoV-2的Omicron血统,并与基因组测序进行前性比较
Nathan Zelyas1,2, Kanti Pabbaraju3, Matthew A Croxen4,5,6
1Alberta Precision Laboratories, Public Health Laboratory, Edmonton, AB, Canada. nathan.zelyas@aplabs.ca.
Scientific reports
|October 14, 2023
概括
快速PCR测定准确识别了阿尔伯塔省的SARS-CoV-2 Omicron亚系BA.1,BA.2,BA.4和BA.5在阿尔伯塔省. 这种基因组监测方法使得在BA.5波期间能够有效监测.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 公共卫生 公共卫生
背景情况:
- 欧米克朗 (SARS-CoV-2) 在2021年底成为全球主导,不同的亚系驱动单独的波浪.
- 对新出现的SARS-CoV-2变种的有效监测对于公共卫生反应至关重要.
研究的目的:
- 开发和实施快速实时PCR测定,以区分Omicron亚系BA.1,BA.2,BA.4和BA.5.5的亚系.
- 评估这些新型试验的分析灵敏度,准确性和与基因组测序的一致性.
主要方法:
- 设计和实施针对特定遗传标记物的实时逆转录酶PCR试验 (S:N501Y,S:ins214EPE,S:H69/V70,ORF7b:L11F,M:D3N).
- 将标记结果结合起来,将样本划分为特定的Omicron亚系.
- 使用12,592个标本对基因组测序进行验证.
主要成果:
- 开发的PCR测定显示出高分析灵敏度 (132-2229副本/毫升) 和实验室准确度 (98.9-100%).
- 在PCR测定和基因组测序之间观察到高达97.3%的高度一致性.
- 这些分析成功地促进了在BA.5-主导时期的SARS-CoV-2血统监测.
结论:
- 针对特定遗传标记的实时PCR测定提供了一个快速而准确的方法来识别Omicron亚系.
- 这些测试是对SARS-CoV-2变种的公共卫生监测的宝贵工具.
- 基于PCR的检测与基因组测序的整合增强了基因组监测能力.
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