Wastewater tracking was used before the pandemic to monitor for polio and illicit drug use, but interest in the field and its applications has now ballooned.

中文翻译：

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污水监测以多种方式帮助全球抗击COVID

在大流行之前使用了废水追踪来监测小儿麻痹症和非法药物的使用，但是现在对该领域及其应用的兴趣激增。