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. 2021 Dec 4:dyab241. doi: 10.1093/ije/dyab241

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© Crown copyright 2021.

This article contains public sector information licensed under the Open Government Licence v3.0 (http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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Proportion of healthcare workers (HCWs) testing positive for SARS-CoV-2 over the first wave. Levels of UK hospital HCW COVID-19 infection were analysed using data from studies included in worldwide reviews of HCW risk factors and serology. This identified 21 studies, with test data collected during 3 March to 12 June 2020, from settings in seven National Health Service (NHS) England regions and Scotland. Analyses were conducted for current-infection testing [polymerase chain reaction (PCR) tests] and cumulative-infection testing (antibody tests or combined results from antibody and PCR tests), with additional details gathered from the studies to enable stratification by COVID-19 symptom history, to gather more granular temporal and spatial details (where detailed data were only published in graphical format, these were extracted using the digitize package in R¹⁴).