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COVID-19 in non-healthcare workplace settings in NSW, Australia

. 2022 Dec;46(6):751-757. doi: 10.1111/1753-6405.13309. Epub 2022 Oct 3. COVID-19 in non-healthcare workplace settings in NSW, Australia

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COVID-19 in non-healthcare workplace settings in NSW, Australia

Sarah Khanlari et al. Aust N Z J Public Health. 2022 Dec.

. 2022 Dec;46(6):751-757. doi: 10.1111/1753-6405.13309. Epub 2022 Oct 3. Affiliations

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Abstract

Objectives: To describe patterns of SARS-CoV-2 transmission in non-healthcare workplace settings during the first six months of COVID-19 spread, in New South Wales (NSW), Australia.

Methods: Locally acquired COVID-19 cases between February 2020 and August 2020 were reviewed to determine the: total number of workplace-associated cases and clusters; workplace type; and modes of transmission.

Results: There were 72 COVID-19 workplace clusters with 231 cases and an additional 11 workplace-acquired cases who were not part of a cluster. Workplaces most associated with clusters included construction, manufacture and trade (31%, 22 clusters), office and clerical (25%, 18 clusters) and retail (14%, 10 clusters). Most transmission events were best explained by direct transmission, with two workplace clusters demonstrating evidence of partial indirect spread.

Conclusions: Findings demonstrate workplace settings, particularly construction, office and retail settings have heightened risk of transmission.

Implications for public health: The risk of infectious disease transmission is well understood for healthcare workers, despite other workplace types representing higher volumes of workers with less risk controls. This study should assist policy makers and the public to understand COVID-19 transmission in workplaces and the heightened risks associated with certain workplace settings.

Keywords: COVID-19; outbreak; public health; workplaces.

© 2022 The Authors.

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Figures

Figure 1

Flow chart of cluster and…

Figure 1

Flow chart of cluster and case review process. Clusters are defined as 2…

Figure 1

Flow chart of cluster and case review process. Clusters are defined as 2 or more workplace associated cases, where the primary case's source may be non‐workplace related. ACF: aged‐care facility; HCW: healthcare worker.

Figure 2

Epidemic curve of locally acquired…

Figure 2

Epidemic curve of locally acquired COVID‐19 cases in NSW by onset date (1…

Figure 2

Epidemic curve of locally acquired COVID‐19 cases in NSW by onset date (1 February 2020 to 7 August 2020). OSI: Oxford Stringency Index, representing national policy stringency.

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    1. Lan F‐Y, Wei C‐F, Hsu Y‐T, Christiani DC, Kales SN. Work‐related COVID‐19 transmission in six Asian countries/areas: A follow‐up study. PLoS One. 2020;15(5) - PMC - PubMed
    1. Nguyen LH, Drew DA, Graham MS, Joshi AD, Guo C‐G, Ma W, et al. Risk of COVID‐19 among front‐line health‐care workers and the general community: A prospective cohort study. Lancet Public Health. 2020;5(9):e475–ee83. - PMC - PubMed
    1. Mutambudzi M, Niedzwiedz C, Macdonald EB, Leyland A, Mair F, Anderson J, et al. Occupation and risk of severe COVID‐19: Prospective cohort study of 120 075 UK Biobank participants. Occup Environ Med. 2021;78(5):307. - PMC - PubMed
    1. Verbeek JH, Rajamaki B, Ijaz S, Sauni R, Toomey E, Blackwood B, et al. Update In: Personal protective equipment for preventing highly infectious diseases due to exposure to contaminated body fluids in healthcare staff. Cochrane Database Syst Rev. 2020;4(4) - PMC - PubMed
    1. New South Wales Department of Health . State Government of NSW; Sydney (AUST): 2020. In Focus: COVID‐19 in Healthcare Workers in NSW.

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