Skip directly to page options Skip directly to A-Z link
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

Lydia Cheng1, Hadi A. Dhiyebi1, Monali VariaComments to Author , Kyle Atanas, Nivetha Srikanthan, Samina Hayat, Heather Ikert, Meghan Fuzzen, Carly Sing-Judge, Yash Badlani, Eli Zeeb, Leslie M. Bragg, Robert Delatolla, John P. Giesy, Elaine Gilliland, and Mark R. Servos
Author affiliations: Regional Municipality of Peel, Mississauga, Ontario, Canada (L. Cheng, M. Varia, K. Atanas, E. Gilliland); University of Waterloo, Waterloo, Ontario, Canada (H.A. Dhiyebi, N. Srikanthan, S. Hayat, H. Ikert, M. Fuzzen, C. Sing-Judge, Y. Badlani, E. Zeeb, L.M. Bragg, M.R. Servos); University of Ottawa, Ottawa, Ontario, Canada (R. Delatolla); University of Saskatchewan, Saskatoon, Saskatchewan, Canada (J.P. Giesy); Baylor University, Waco, Texas, USA (J.P. Giesy)

Main Article

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.

Main Article

1These first authors contributed equally to this article.

Page created: June 22, 2023
Page updated: July 19, 2023
Page reviewed: July 19, 2023
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
file_external