Table 3.
Detection of SARS-CoV-2 on each sampling day using passive samplers and grab/autosamplers. A positive result was determined when at least two out of four RT-qPCR tests for N1 and N2 targets were observed as positive. The symbol “+” represents the detection of SARS-CoV-2 in the sample; symbol “−” represents no detection of SARS-CoV-2.
| Sampling Day | Auto Sampler (100 mL Wastewater) | Passive Sampler | |||
|---|---|---|---|---|---|
| SARS-CoV-2 Detection | Sample Type | SARS-CoV-2 Detection | Deployment Time (Hours) | ||
| Membrane | Swab | ||||
| 22 April 2021 | + | Composite | + | + | 48 |
| 26 April 2021 | + | Composite | + | + | 96 |
| 28 April 2021 | + | Composite | + | + | 48 |
| 4 May 2021 | + | Composite | + | + | 144 |
| 6 May 2021 | + | Composite | + | + | 48 |
| 10 May 2021 | + | Composite | + | + | 96 |
| 12 May 2021 | + | Composite | + | + | 48 |
| 18 May 2021 | + | Composite | − | + | 144 |
| 20 May 2021 | + | Composite | + | + | 48 |
| 25 May 2021 | + | Composite | + | + | 120 |
| 27 May 2021 | − | Composite | + | − | 48 |
| 31 May 2021 | − | Grab | + | + | 96 |
| 2 June 2021 | − | Grab | − | − | 48 |
| 8 June 2021 | − | Grab | − | − | 96 |
| 10 June 2021 | − | Grab | − | − | 48 |