Table 1.

Number of samples from which SARS-CoV-2 RNA was detected by CDC-N1 and CDC-N2 assays.

Procedure	CDC-N1	CDC-N2	Total number of positive samples
L.Long	0	0	0/34
L.Short	1a	0	1/34
L.0	0	0	0/34
F.Long	0	0	0/34
LS.Long	1b	0	1/34

^aPositive signal was observed at the sample collected on July 21 at WWTP A (Ct 39.0).

^bPositive signal was observed at the sample collected on July 21 at WWTP A (Ct 39.1).