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. 2021 Dec 13;193(49):E1868–E1877. doi: 10.1503/cmaj.202783

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This is an Open Access article distributed in accordance with the terms of the Creative Commons Attribution (CC BY-NC-ND 4.0) licence, which permits use, distribution and reproduction in any medium, provided that the original publication is properly cited, the use is noncommercial (i.e., research or educational use), and no modifications or adaptations are made. See: https://creativecommons.org/licenses/by-nc-nd/4.0/

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Figure 3: — Seroprevalence by hospital (A–J) and type of region. Note: CI = confidence interval. Each letter corresponds to a specific hospital. Hospitals A and B are located in regions with low incidence of COVID-19 during the first wave of the pandemic (i.e., Capitale-Nationale and Eastern Townships). Hospitals C through J are located in the Montréal region, which had a high incidence of COVID-19 during the first wave.