包括物理化学水质测量可以改善污水中的SARS-CoV-2RNA水平与较小的下水道内的COVID-19病例之间的关联
Erik D Lamm1, Kristina M Babler2, Mark E Sharkey3
1Department of Chemical, Environmental and Materials Engineering, University of Miami, Coral Gables, FL USA 33146.
概括
测量废水中的pH值和其他水质因素可以改善COVID-19流行率的跟踪. 在废水监测中包括pH数据可以提高预测严重急性呼吸系统综合征冠状病毒-2 (SARS-CoV-2) 病例数量的准确性.
科学领域:
- 环境科学 环境科学
- 公共卫生 公共卫生
- 流行病学 流行病学
背景情况:
- 废水监测是跟踪传染病流行率的宝贵工具,例如COVID-19.
- 废水中的环境因素可能会影响SARS-CoV-2的检测,但往往在污水处理厂的上游没有测量.
- 了解这些环境影响对于完善基于废水的流行病学至关重要.
研究的目的:
- 在废水处理厂的上游测量环境参数 (流量,温度,pH,导电,溶氧,度).
- 评估这些参数是否改善了废水SARS-CoV-2RNA与社区COVID-19流行之间的相关性.
- 评估环境数据对不同时间和人口规模的影响.
主要方法:
- 收集的废水样本用于SARS-CoV-2RNA和环境参数测量 (流量,水质).
- 在各种时间尺度 (分钟到几周) 和人口尺度 (从社区到社区) 中分析数据.
- 使用回归分析来比较SARS-CoV-2 RNA与COVID-19流行率的相关性,包括环境参数和没有环境参数.
主要成果:
- 短期的水质测量并没有改善相关性,这是由于高度的变化.
- 每周平均pH值数据显著改善了废水SARS-CoV-2RNA和COVID-19流行率之间的相关性.
- 根平均平方误差在集群和社区规模下降,特别是在三角洲波期间.
- 在集群 (成千上万) 与社区 (成千上万) 规模上,pH含量显示出更大的益处.
结论:
- 简单的物理化学水质参数,特别是pH值,可以增强基于废水的流行病学.
- 建议将pH值测量整合到废水监测计划中,以提高准确度.
- 基于废水的流行病学可以通过考虑上游下水道的环境条件来改进.
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