Seroprevalence of COVID-19 among healthcare workers in Hong Kong during the first 2 years of the COVID-19 pandemic (2020-2021): a longitudinal cohort study.

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Title: Seroprevalence of COVID-19 among healthcare workers in Hong Kong during the first 2 years of the COVID-19 pandemic (2020-2021): a longitudinal cohort study.
Authors: Lim WW; The University of Hong Kong, Hong Kong, Hong Kong., Mak L; The University of Hong Kong, Hong Kong, Hong Kong., Ho F; The University of Hong Kong, Hong Kong, Hong Kong., Ng TWY; The University of Hong Kong, Hong Kong, Hong Kong., Yau EM; The University of Hong Kong, Hong Kong, Hong Kong., Ko RLW; The University of Hong Kong, Hong Kong, Hong Kong., Chen D; The University of Hong Kong, Hong Kong, Hong Kong., Xiao J; The University of Hong Kong, Hong Kong, Hong Kong., Seto WH; The University of Hong Kong, Hong Kong, Hong Kong., Cheng SMS; The University of Hong Kong, Hong Kong, Hong Kong., Perera RAPM; The University of Hong Kong, Hong Kong, Hong Kong., Ip DKM; The University of Hong Kong, Hong Kong, Hong Kong., Peiris M; Division of Public Health Laboratory Sciences, The University of Hong Kong, Hong Kong, Hong Kong., Cowling BJ; The University of Hong Kong, Hong Kong, Hong Kong bcowling@hku.hk.
Source: BMJ open [BMJ Open] 2026 May 15; Vol. 16 (5), pp. e110192. Date of Electronic Publication: 2026 May 15.
Publication Type: Journal Article
Journal Info: Publisher: BMJ Publishing Group Ltd Country of Publication: England NLM ID: 101552874 Publication Model: Electronic Cited Medium: Internet ISSN: 2044-6055 (Electronic) Linking ISSN: 20446055 NLM ISO Abbreviation: BMJ Open Subsets: MEDLINE
Database: MEDLINE Ultimate
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  Data: Seroprevalence of COVID-19 among healthcare workers in Hong Kong during the first 2 years of the COVID-19 pandemic (2020-2021): a longitudinal cohort study.
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  Data: <searchLink fieldCode="AU" term="%22Lim+WW%22">Lim WW</searchLink>; The University of Hong Kong, Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Mak+L%22">Mak L</searchLink>; The University of Hong Kong, Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Ho+F%22">Ho F</searchLink>; The University of Hong Kong, Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Ng+TWY%22">Ng TWY</searchLink>; The University of Hong Kong, Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Yau+EM%22">Yau EM</searchLink>; The University of Hong Kong, Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Ko+RLW%22">Ko RLW</searchLink>; The University of Hong Kong, Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Chen+D%22">Chen D</searchLink>; The University of Hong Kong, Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Xiao+J%22">Xiao J</searchLink>; The University of Hong Kong, Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Seto+WH%22">Seto WH</searchLink>; The University of Hong Kong, Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Cheng+SMS%22">Cheng SMS</searchLink>; The University of Hong Kong, Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Perera+RAPM%22">Perera RAPM</searchLink>; The University of Hong Kong, Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Ip+DKM%22">Ip DKM</searchLink>; The University of Hong Kong, Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Peiris+M%22">Peiris M</searchLink>; Division of Public Health Laboratory Sciences, The University of Hong Kong, Hong Kong, Hong Kong.<br /><searchLink fieldCode="AU" term="%22Cowling+BJ%22">Cowling BJ</searchLink>; The University of Hong Kong, Hong Kong, Hong Kong bcowling@hku.hk.
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  Data: <searchLink fieldCode="JN" term="%22101552874%22">BMJ open</searchLink> [BMJ Open] 2026 May 15; Vol. 16 (5), pp. e110192. <i>Date of Electronic Publication: </i>2026 May 15.
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  Data: <i>Publisher: </i><searchLink fieldCode="PB" term="%22BMJ+Publishing+Group+Ltd%22">BMJ Publishing Group Ltd </searchLink><i>Country of Publication: </i>England <i>NLM ID: </i>101552874 <i>Publication Model: </i>Electronic <i>Cited Medium: </i>Internet <i>ISSN: </i>2044-6055 (Electronic) <i>Linking ISSN: </i><searchLink fieldCode="IS" term="%2220446055%22">20446055 </searchLink><i>NLM ISO Abbreviation: </i>BMJ Open <i>Subsets: </i>MEDLINE
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              Text: 2026 May 15
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