Volume 29, Number 8—August 2023
Research
Omicron COVID-19 Case Estimates Based on Previous SARS-CoV-2 Wastewater Load, Regional Municipality of Peel, Ontario, Canada
Table 2
Pearson correlation coefficients (r) between ln(x + 1) transformed daily wastewater SARS-CoV-2 load and ln(x + 1) transformed incident COVID-19 cases, by wastewater treatment plant and epidemic wave, at various lags, Regional Municipality of Peel, Ontario, Canada*
WWTP, lag, d | Epidemic waves |
|||||||
---|---|---|---|---|---|---|---|---|
2 | 3 | 4 | 5 | 6 | 2–6 | 2–4, pre-Omicron | 5–6, Omicron | |
Clarkson | ||||||||
0 | 0.7078 | 0.8809 | 0.5747 | 0.7203 | 0.6655† | 0.6273† | 0.8677 | 0.5469† |
1 | 0.7144† | 0.8966 | 0.6661† | 0.7248† | 0.5933 | 0.6220 | 0.8864† | 0.5384 |
2 | 0.6935 | 0.8901 | 0.5041 | 0.6607 | 0.5712 | 0.5849 | 0.8705 | 0.4743 |
3 | 0.6678 | 0.9089† | 0.5321 | 0.6155 | 0.5480 | 0.5863 | 0.8788 | 0.4497 |
4 | 0.6653 | 0.9037 | 0.4539 | 0.5791 | 0.5468 | 0.5771 | 0.8727 | 0.4236 |
5 |
0.6550 |
0.8906 |
0.5550 |
0.5298 |
0.5762 |
0.5737 |
0.8699 |
0.4023 |
G.E. Booth | ||||||||
0 | 0.7173† | 0.8993 | 0.5774† | 0.7922† | 0.7572† | 0.6030† | 0.8698† | 0.6828† |
1 | 0.6935 | 0.9068† | 0.5167 | 0.7601 | 0.7227 | 0.5932 | 0.8696 | 0.6535 |
2 | 0.6714 | 0.8722 | 0.4735 | 0.7076 | 0.7251 | 0.5529 | 0.8452 | 0.6165 |
3 | 0.6466 | 0.8889 | 0.4923 | 0.6767 | 0.7314 | 0.5650 | 0.8559 | 0.5974 |
4 | 0.6575 | 0.8808 | 0.4425 | 0.6347 | 0.7144 | 0.5592 | 0.8492 | 0.5658 |
5 |
0.6499 |
0.8641 |
0.4998 |
0.5953 |
0.7095 |
0.5467 |
0.8417 |
0.5502 |
Clarkson and G.E. Booth | ||||||||
0 | 0.7647† | 0.9422 | 0.6447† | 0.7908† | 0.7910† | 0.6296† | 0.9101 | 0.6601† |
1 | 0.7431 | 0.9438† | 0.6266 | 0.7655 | 0.7357 | 0.6150 | 0.9106† | 0.6341 |
2 | 0.7290 | 0.9246 | 0.5295 | 0.7025 | 0.7276 | 0.5774 | 0.8921 | 0.5830 |
3 | 0.7087 | 0.9326 | 0.5505 | 0.6675 | 0.7186 | 0.5820 | 0.8972 | 0.5616 |
4 | 0.7121 | 0.9292 | 0.5051 | 0.6223 | 0.7017 | 0.5756 | 0.8931 | 0.5282 |
5 | 0.7057 | 0.9163 | 0.5706 | 0.5814 | 0.7111 | 0.5678 | 0.8887 | 0.5115 |
*Colors indicate strength of association: gray, weak (r<0.4); yellow, moderate (0.4≤r<0.7); green, strong (r>0.7). WWTP, wastewater treatment plant. †Largest r per wave.
1These first authors contributed equally to this article.
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Page updated: July 19, 2023
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