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. 2021 Apr 25;785:147270. doi: 10.1016/j.scitotenv.2021.147270

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Fig. 1 — Wastewater (WW) preparation, virus concentration, extraction and detection methods trialed in this study. Of the methods shown, the PEG precipitation protocol was most successful in the recovery of SARS-CoV-2. (Qiagen kit; RNeasy PowerWater, MN kit; NucleoSpin™ RNA Virus).