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. 2021 Oct 17;11(10):e051573. doi: 10.1136/bmjopen-2021-051573

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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The probability of SARS-CoV-2 seropositivity among HCW according to different exposure risks and hospital departments. (A) HCW exposed to (COVID-19 positive) HCW exposed to COVID-19 positive patient, coworker and household contact are compared with HCW without either confirmed or suspected COVID-19 exposure. OR and 95% CIs are based on multivariate logistic regression analysis, adjusted for age, COVID-19 confirmed and suspected contacts, occupation and department as confounders. (B, C) HCW working at the department are compared with HCW working without direct patient contact. ORs and 95% CIs are based on multiple logistic regression analysis, adjusted for age, COVID-19 confirmed and suspected contact, and occupation as confounders. HCW, healthcare worker.