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

Fig. 2.

Fig. 2

Frequency of SARS-CoV-2 genes detection in wastewater by dormitory type.

(A) Frequency of N1 gene detection by dormitory types. (B) Frequency of N2 gene detection by dormitory types.