Table 3.
Lagged moving average of the SARS-CoV-2 concentration for days with positive COVID-19 cases and percentage of days that the time-lagged concentrations were able to predict days with positive COVID-19 cases and negative COVID-19 cases.
| Date | Number of COVID-19 cases | Air SARS-CoV-2 GC/m3 |
Surface SARS-CoV-2 GC/m2 |
Wastewater SARS-CoV-2 GC/L |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lag-1 | Lag-2 | Lag-3 | Lag-1 | Lag-2 | Lag-3 | Lag-1 | Lag-2 | Lag-3 | ||
| 3/9/2021 | 1 | 4.0 | 3.3 | 2.5 | ND | ND | ND | 2475 | 1700 | 1481 |
| 3/15/2021 | 1 | 5.5 | 7.7 | 9.4 | ND | ND | ND | ND | ND | 88 |
| 3/27/2021 | 1 | 17.8 | 11.8 | 8.9 | 38.3 | 27.5 | 23.4 | 4775 | 3183 | 2388 |
| 4/6/2021 | 1 | 7.5 | 15.5 | 14.4 | 7.0 | 4.7 | 3.8 | ND | ND | ND |
| 4/8/2021 | 1 | 0.5 | 3.2 | 4.0 | 2.8 | 4.2 | 4.9 | ND | ND | ND |
| 4/9/2021 | 1 | 1.3 | 1.2 | 3.0 | 2.8 | 1.8 | 3.1 | 83 | 56 | 42 |
| 4/13/2021 | 1 | 19.8 | 15.7 | 11.8 | 89.5 | 61.2 | 45.9 | 333 | 222 | 167 |
| 4/19/2021 | 2 | 3.5 | 8.3 | 8.0 | 7.3 | 7.7 | 5.8 | 183 | 122 | 1033 |
| 4/20/2021 | 1 | 2.8 | 2.3 | 6.3 | ND | 4.8 | 5.8 | 300 | 200 | 150 |
| 4/23/2021 | 2 | 1.0 | 0.7 | 0.5 | 4.5 | 3.0 | 2.3 | ND | 844 | 692 |
| 4/27/2021 | 1 | ND | 12.7 | 62.0 | 15.8 | 22.7 | 17.0 | 975 | 1583 | 1254 |
| % days COVID-19+ | 90.9 | 100 | 100 | 72.7 | 81.8 | 81.8 | 63.6 | 72.7 | 72.7 | |
| % days COVID-19- | 63.6 | 72.7 | 84.8 | 51.5 | 51.5 | 51.5 | 66.7 | 72.7 | 84.8 | |
ND = below limit of detection.