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. 2021 Jun 2;790:148205. doi: 10.1016/j.scitotenv.2021.148205

Table 2.

Descriptive statistics of Ct values by RT-qPCR for each method.

Sampling method Detection (n detected/n tested)
Mean Ct
Nov. 2020
May 2021
N ORF1ab N ORF1ab N ORF1ab
Grab 10/17 8/17 14/17 8/17 34.06 35.96
Composite (16-h) 13/17 11/17 16/17 12/17 33.38 34.89
Moore swab 17/17 15/17 17/17 16/17 32.23 34.56