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. 2022 Sep 6;853:158458. doi: 10.1016/j.scitotenv.2022.158458

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© 2022 Published by Elsevier B.V.

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Fig. 3 — Relation between SARS-CoV-2 wastewater signal (advanced by respective “△t” time lag on the x-axis) and A) laboratory COVID-19 positive cases/100,000 inhabitants in Ottawa and B) laboratory COVID-19 positive cases/100,000 inhabitants in Hamilton, C) hospital admissions/100,000 inhabitants in Ottawa and D) hospitalization admissions/100,000 inhabitants in Hamilton, E) ICU admissions/100,000 inhabitants in Ottawa and F) ICU admissions/100,000 inhabitants in Hamilton, and G) COVID-19 caused deaths/100,000 inhabitants in Ottawa, and H) COVID-19 caused deaths/100,000 inhabitants in Hamilton during the Omicron BA.1 (B.1.1.529.1) surge (Nov. 28th, 2021, to Feb. 22nd, 2022).

*Laboratory positive cases in Ottawa and Hamilton are underreported due to updated PCR eligibility in Ontario as of Dec. 31st, 2021.