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Association between COVID-19 infection and work exposure assessed by the Mat-O-Covid job exposure matrix in the CONSTANCES cohort

Abstract : Objectives The COVID-19 pandemic has brought to light a new occupational health threat. We aimed to evaluate the association between COVID-19 infection and work exposure to SARS-CoV-2 assessed by a job-exposure matrix (JEM), in a large population cohort. We also estimated the population-attributable fraction among exposed subjects. Methods We used the SAPRIS-SERO sample of the CONSTANCES cohort, limited to subjects actively working, and with a job code available and a questionnaire on extra work activities. The following outcomes were assessed: COVID-19 diagnosis was made by a physician; a seropositivity to the ELISA-S test (‘serology strict’) and ELISA-S test intermediate with positive ELISA-NP or a positive neutralising antibodies SN (‘serology large’). Job exposure was assessed using Mat-O-Covid, an expert-based JEM with an Index used as a continuous variable and a threshold at 13/1000. Results The sample included 18 999 subjects with 389 different jobs, 47.7% were men with a mean age of 46.2 years (±9.2 years). The Mat-O-Covid index taken as a continuous variable or with a threshold greater than 13/1000 was associated with all the outcomes in bivariable and multivariable logistic models. ORs were between 1.30 and 1.58, and proportion of COVID-19 attributable to work among exposed participants was between 20% and 40%. Discussion Using the Mat-O-Covid JEM applied to a large population, we found a significant association between work exposure to SARS-CoV-2 and COVID-19 infection, though the estimation of attributable fraction among exposed people remained low to moderate. Further studies during other exposed periods and with other methods are necessary.
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https://www.hal.inserm.fr/inserm-03782693
Contributor : Valérie Pecqueret Connect in order to contact the contributor
Submitted on : Wednesday, September 21, 2022 - 2:00:33 PM
Last modification on : Saturday, September 24, 2022 - 4:00:26 AM

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Marc Fadel, Fabien Gilbert, Clément Legeay, Vincent Dubée, Yolande Esquirol, et al.. Association between COVID-19 infection and work exposure assessed by the Mat-O-Covid job exposure matrix in the CONSTANCES cohort. Occupational and Environmental Medicine, BMJ Publishing Group, 2022, pp.oemed-2022-108436. ⟨10.1136/oemed-2022-108436⟩. ⟨inserm-03782693⟩

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