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CME Disclosure Statement: Unless noted, all individuals in control of content reported no relevant financial relationships. If applicable, all relevant financial relationships have been mitigated.
Accepted for Publication: June 1, 2021.
Published: August 9, 2021. doi:10.1001/jamanetworkopen.2021.20150
Open Access: This is an open access article distributed under the terms of the CC-BY License. © 2021 Fitzpatrick T et al. JAMA Network Open.
Corresponding Author: Astrid Guttmann, MDCM, MSc, ICES, G1 06, 2075 Bayview Ave, Toronto, ON M4N 3M5, Canada (email@example.com).
Author Contributions: Mr Wilton and Dr Guttmann had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis.
Concept and design: Fitzpatrick, Chung, Guttmann.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Fitzpatrick, Guttmann.
Critical revision of the manuscript for important intellectual content: Fitzpatrick, Wilton, Chung.
Statistical analysis: Fitzpatrick, Wilton.
Administrative, technical, or material support: Fitzpatrick, Guttmann.
Conflict of Interest Disclosures: Dr Guttmann reported receiving funding through ICES from the Ontario Ministry of Health (MOH) to ICES (formerly, the Institute for Clinical Evaluative Sciences), including specific funding for COVID-19–related work during the conduct of the study. No other disclosures were reported.
Funding/Support: This study was supported by ICES, which is funded by the Ontario MOH and MLTC, as well as the Ontario Health Data Platform (OHDP), a Province of Ontario initiative to support Ontario’s ongoing response to COVID-19 and its related effects.
Role of the Funder/Sponsor: The funder had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Disclaimer: The opinions, results, and conclusions are those of the authors and are independent from the funding source. No endorsement by ICES, the Ontario MOH or MLTC, the OHDP and its partners, or the Province of Ontario is intended or should be inferred.
Additional Contributions: The authors thank Public Health Ontario for access to case level data from the integrated Public Health Information System (iPHIS); Case and Contact Management System (CCM) Plus, and COVID-19 laboratory data as well as assistance with data interpretation. They also thank the staff of Ontario’s public health units who are responsible for COVID-19 case and contact management and data collection within iPHIS/CCM Plus.
Additional Information: Parts of this report are based on data and information compiled and provided by the Ontario MOH, the Canadian Institute for Health Information, and Public Health Ontario.
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