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基于PCR的饮用水系统风险评估 - - 一个经验性的现场评估

Markus Petzold¹, Nicole Zacharias², Sarah Uhle¹

¹Institute of Medical Microbiology and Virology, University Hospital Dresden, Dresden University of Technology, Fetscherstraße 74, 01307 Dresden, Germany.

|June 27, 2025

概括

量化PCR (qPCR) 和培养方法正在为监测水中传染病原体,如军菌进行辩论. 单靠这两种方法都不能充分评估健康风险,这表明需要一种综合方法来有效地保持水的卫生.

科学领域:

环境微生物学环境微生物学
公共卫生公共卫生
分析化学是一种分析化学.

背景情况:

通过水传播的病原体,特别是军团菌,对公共卫生构成重大风险.
对于清洁水系统的现有指导方针各不相同,关于最佳监测方法的讨论仍在进行中.
基于培养的方法是雷地欧内拉检测的既定标准,而定量实时PCR (qPCR) 是一个有争议的替代方案.

研究的目的:

评估定量实时PCR (qPCR) 的有效性,作为监测饮用水中的军团菌的基于培养方法的替代方法.
确定qPCR监测是否有助于可持续的水卫生和有效的健康预防.
为了评估qPCR的诊断值与培养相比,用于检测军团菌.

主要方法:

使用基于培养的方法和定量实时PCR (qPCR) 分析了101个饮用水样本.
测定莱吉奥内拉菌种群的存在. 通过培养来提高度和莱吉欧内拉肺炎菌.
与黄金标准种植方法相比,对qPCR的负和正预测值的评估.

主要成果:

与培养相比,qPCR显示了高负预测值 (100%为Legionella spp.,98%为L. pneumophila)
对Legionella spp.的低阳性预测值. 由于无处不在的DNA检测.
在18%的样本中,qPCR检测到莱吉欧内拉肺炎菌的DNA,只有7%的样本是可量化的.

结论:

无论是培养还是单独的qPCR都不足以进行适当的风险评估,即在水系统中对军团菌的风险评估.
建议将qPCR与种植方法的战略整合用于全面的水样分析.
为逐步分析制定联合协议可以加强未来的国际水卫生监管框架.

关键词:

军团菌 (Legionella) 是一种传染病.文化文化文化文化饮用水饮用水饮用水卫生卫生卫生监控监控监控监控监控监控 qPCRR 是一个很好的方法.

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