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. 2021 May 29;200:111374. doi: 10.1016/j.envres.2021.111374

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Fig. 6 — Comparison of Spearman R values for N1 and N2 genes by sewer access type.

(A) Comparison of Spearman R values for N1 and N2 gene concentrations vs. COVID-19 cases detected in dormitories on the same day for three sewer access types. (B) Comparison of Spearman R values for N1 and N2/PMMV ratios vs. COVID-19 cases detected in dormitories on the same day for three sewer access types. (C) Average PMMV RNA concentrations for each sewer access type for all dormitories.