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KMID : 0191120220370430308
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Journal of Korean Medical Science
2022 Volume.37 No. 43 p.308 ~ p.308
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Rates of COVID-19 Infection Among Healthcare Workers in Designated COVID-19 Wards and General Wards
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Jung Ji-Won
Kim Sun-Kyung
Lee Yu-Mi
Park So-Yeon
Lim Young-Ju
Kim Eun-Ok
Kim Sung-Han
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Abstract
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Background: To evaluate the effects of isolating coronavirus disease 2019 (COVID-19) patients in general wards, we compared the rates of COVID-19 infection in nurses and nursing assistants working in COVID-19 designated wards and in general wards of our hospital from 1 October 2021 to 21 April 2022.
Methods: This study was conducted in a 2,700-bed tertiary care hospital in Seoul, Korea. Designated wards comprised single, negative pressure rooms and a 100% outdoor air system.
Results: During the study period, a total of 2,698 nurses and nursing assistants were employed at our hospital, of whom 310 (11%) were working in the designated wards, and the remaining 2,388 (89%) in the general wards, and among whom 1,158 (43%) were diagnosed with COVID-19. The healthcare workers (HCWs) in the designated wards were less frequently diagnosed with COVID-19 than those in the general wards (31% vs. 45%, P < 0.001). During the period before patients with COVID-19 were isolated in general wards, and during the period after these cases were isolated in general ward, HCWs in designated wards were less frequently infected with the virus than those in general wards (7% vs. 11%, P = 0.039; and 23% vs. 33%, P < 0.001, respectively).
Conclusion: HCWs in designated wards have a lower rate of contracting COVID-19 than those in general wards. A lack of exposure to undiagnosed cases and their caregivers, greater care with social distancing outside the hospital, higher rates of 3-dose vaccinations, and the use of isolation rooms with negative pressure may be associated with this finding.
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KEYWORD
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COVID-19, SARS-CoV-2, Healthcare Workers, Isolation
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