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. 2021 Aug 19;801:149757. doi: 10.1016/j.scitotenv.2021.149757

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Fig. 3 — Relationships between SARS-CoV-2 gene concentration in wastewater and new confirmed cases. Overlaid trend plots of SARS-CoV-2 N2 gene concentrations in wastewater and case number of different averaging methods in: a) Southerly sewershed population; b) Marietta sewershed population; c) Spearman correlations of all sites by different genes; and d) Spearman correlations of all sites by case number of different averaging methods. Significant correlations (Spearman) were highlighted with two asterisks and one asterisk for p-value < 0.05 and 0.05 < p-value < 0.1, respectively.