Table 2:
Mean, standard deviation, range and positivity of raw (Log10 transformed) SARS-CoV-2 RNA for University of Miami samples at the campus scale and for MD-WASD at the community scale.
| Period of Record |
No. samples |
Mean (Log10 gc/L) |
Standard deviation (Log10 gc/L) |
Range (Log10 gc/L) |
Positivity | |
|---|---|---|---|---|---|---|
| UM, WG01 | Sep. 20-Sep.22 | 102 | 4.36 | 4.74 | BDLa - 5.48 | 76% |
| UM, WG02 | Sep. 20-Sep.22 | 102 | 4.85 | 5.34 | BDL - 6.21 | 84% |
| UM, WG0U | Sep. 20-Sep.22 | 96 | 4.48 | 6.56 | BDL - 5.99 | 71% |
| UM, WC0Dc (Composite) | Jan. 21-Sep. 22 | 90 | 4.69b | 4.94 | BDL - 5.79 | 99% |
| UM, WC0Dg (Grab) | Jan. 21-May. 22 | 71 | 4.70 | 5.03 | 2.70 – 5.89 | 100% |
| MD-WASD (Central) | Mar.20-Sep. 22 | 170 | 5.62c | 5.73 | 3.95 - 6.44 | 99% |
| MD-WASD (North) | Mar.20-Sep. 22 | 155 | 5.66 | 5.72 | 3.75 - 6.48 | 99% |
| MD-WASD (South) | Mar.20-Sep. 22 | 158 | 5.76 | 5.91 | 4.02 - 6.77 | 99% |
*
BDL = Below Detection Limits. Detection limit of 100 gc/L or Log10 = 2 gc/L.
b
Using the mean flow rate for the CDWWTP and population served, the flow and population normalized mean genomic copies were computed as 2.23 x 105 gc/person or 5.4 Log10 gc/person.
c
Similar to “b” above, the flow and population normalized mean genomic copies were computed as 1.89 x 106 or 6.3 Log10 gc/person.