COVID-19 among healthcare workers of a tertiary-care hospital in Singapore

Background: Singapore General Hospital (SGH) is the largest acute tertiary-care hospital in Singapore. Healthcare workers (HCWs) are at risk of acquiring COVID-19 in both the community and workplaces. SGH has a robust exposure management process including prompt contact tracing, immediate ring fenci...

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Main Authors: Aung Myat Oo, Indumathi Venkatachalam, Xiang Ying Jean Sim, May Kyawt Aung, Conceicao Edwin Philip, Yang Yong, Shalvi Arora, Shawn See Wee Jin, Wai Leong Lester Lee, Fong Yuke Tien, Lai Chee Lee, Moi Lin Ling
Format: Article
Language:English
Published: Cambridge University Press 2022-07-01
Series:Antimicrobial Stewardship & Healthcare Epidemiology
Online Access:https://www.cambridge.org/core/product/identifier/S2732494X22001206/type/journal_article
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author Aung Myat Oo
Indumathi Venkatachalam
Xiang Ying Jean Sim
May Kyawt Aung
Conceicao Edwin Philip
Yang Yong
Shalvi Arora
Shawn See Wee Jin
Wai Leong Lester Lee
Fong Yuke Tien
Lai Chee Lee
Moi Lin Ling
author_facet Aung Myat Oo
Indumathi Venkatachalam
Xiang Ying Jean Sim
May Kyawt Aung
Conceicao Edwin Philip
Yang Yong
Shalvi Arora
Shawn See Wee Jin
Wai Leong Lester Lee
Fong Yuke Tien
Lai Chee Lee
Moi Lin Ling
author_sort Aung Myat Oo
collection DOAJ
description Background: Singapore General Hospital (SGH) is the largest acute tertiary-care hospital in Singapore. Healthcare workers (HCWs) are at risk of acquiring COVID-19 in both the community and workplaces. SGH has a robust exposure management process including prompt contact tracing, immediate ring fencing, lock down of affected cubicles or single room isolation for patient contacts, and home isolation orders for staff contacts of COVID-19 cases during the containment phase of the pandemic. Contacts were also placed on enhanced surveillance with PCR testing on days 1 and 4 as well as daily antigen rapid tests (ARTs) for 10 days after exposure. Here, we describe the characteristic of HCWs with COVID-19 during the third wave of the COVID-19 pandemic. Methods: This retrospective observational study included all SGH HCWs who acquired COVID-19 during the third wave (ie, the 18-week period from September 1 to December 31, 2021) of the COVID-19 pandemic. Univariate analysis was used to compare characteristics of work-associated infection (WAI) and community-acquired infection (CAI) among HCWs. Results: Among a workforce of >10,000 at SGH, 335 HCWs acquired COVID-19 during study period. CAI (exposure to known clusters or household contact) accounted for 111 HCW infections (33.1%). Also, 48 HCWs (14.3%) had a WAI (ie, acquired at their work places where there was no patient contact). Among WAsI, only 5 HCWs had hospital-acquired infection (confirmed by phylogenetic analysis). The sources of exposure for the remaining 176 HCWs were unknown. Weekly incidence of COVID-19 among HCWs was comparable to the epidemiology curve of all cases in Singapore (Fig. 1 and 2). The mean age of HCWs with COVID-19 was 39.6 years, and most were women. At the time of positive SARS-CoV-2 PCR test, 223 HCWs were symptomatic, and 67 (20.0%) of them had comorbidities. Only 16 HCWs (4.8%) required hospitalization, and all recovered fully with no mortality (Table 1). Being female was associated with community COVID-19 acquisition (OR, 4.6, P Conclusions: During the thrid wave of the COVID-19 pandemic, a higher percentage of HCWs at SGH acquired the infection from the community than from the workplace. Safe management measures, such as universal masking, social distancing, and robust exposure management processes including prompt contact tracing and environmental disinfection, can reduce the risk of COVID-19 in the hospital work environment.
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spelling doaj.art-833fb29efb9e40229ce85ae32d1537fa2023-03-09T12:28:11ZengCambridge University PressAntimicrobial Stewardship & Healthcare Epidemiology2732-494X2022-07-012s34s3510.1017/ash.2022.120COVID-19 among healthcare workers of a tertiary-care hospital in SingaporeAung Myat OoIndumathi VenkatachalamXiang Ying Jean SimMay Kyawt AungConceicao Edwin PhilipYang YongShalvi AroraShawn See Wee JinWai Leong Lester LeeFong Yuke TienLai Chee LeeMoi Lin LingBackground: Singapore General Hospital (SGH) is the largest acute tertiary-care hospital in Singapore. Healthcare workers (HCWs) are at risk of acquiring COVID-19 in both the community and workplaces. SGH has a robust exposure management process including prompt contact tracing, immediate ring fencing, lock down of affected cubicles or single room isolation for patient contacts, and home isolation orders for staff contacts of COVID-19 cases during the containment phase of the pandemic. Contacts were also placed on enhanced surveillance with PCR testing on days 1 and 4 as well as daily antigen rapid tests (ARTs) for 10 days after exposure. Here, we describe the characteristic of HCWs with COVID-19 during the third wave of the COVID-19 pandemic. Methods: This retrospective observational study included all SGH HCWs who acquired COVID-19 during the third wave (ie, the 18-week period from September 1 to December 31, 2021) of the COVID-19 pandemic. Univariate analysis was used to compare characteristics of work-associated infection (WAI) and community-acquired infection (CAI) among HCWs. Results: Among a workforce of >10,000 at SGH, 335 HCWs acquired COVID-19 during study period. CAI (exposure to known clusters or household contact) accounted for 111 HCW infections (33.1%). Also, 48 HCWs (14.3%) had a WAI (ie, acquired at their work places where there was no patient contact). Among WAsI, only 5 HCWs had hospital-acquired infection (confirmed by phylogenetic analysis). The sources of exposure for the remaining 176 HCWs were unknown. Weekly incidence of COVID-19 among HCWs was comparable to the epidemiology curve of all cases in Singapore (Fig. 1 and 2). The mean age of HCWs with COVID-19 was 39.6 years, and most were women. At the time of positive SARS-CoV-2 PCR test, 223 HCWs were symptomatic, and 67 (20.0%) of them had comorbidities. Only 16 HCWs (4.8%) required hospitalization, and all recovered fully with no mortality (Table 1). Being female was associated with community COVID-19 acquisition (OR, 4.6, P Conclusions: During the thrid wave of the COVID-19 pandemic, a higher percentage of HCWs at SGH acquired the infection from the community than from the workplace. Safe management measures, such as universal masking, social distancing, and robust exposure management processes including prompt contact tracing and environmental disinfection, can reduce the risk of COVID-19 in the hospital work environment.https://www.cambridge.org/core/product/identifier/S2732494X22001206/type/journal_article
spellingShingle Aung Myat Oo
Indumathi Venkatachalam
Xiang Ying Jean Sim
May Kyawt Aung
Conceicao Edwin Philip
Yang Yong
Shalvi Arora
Shawn See Wee Jin
Wai Leong Lester Lee
Fong Yuke Tien
Lai Chee Lee
Moi Lin Ling
COVID-19 among healthcare workers of a tertiary-care hospital in Singapore
Antimicrobial Stewardship & Healthcare Epidemiology
title COVID-19 among healthcare workers of a tertiary-care hospital in Singapore
title_full COVID-19 among healthcare workers of a tertiary-care hospital in Singapore
title_fullStr COVID-19 among healthcare workers of a tertiary-care hospital in Singapore
title_full_unstemmed COVID-19 among healthcare workers of a tertiary-care hospital in Singapore
title_short COVID-19 among healthcare workers of a tertiary-care hospital in Singapore
title_sort covid 19 among healthcare workers of a tertiary care hospital in singapore
url https://www.cambridge.org/core/product/identifier/S2732494X22001206/type/journal_article
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