Article Text
Abstract
Study objective: To explore the relation between incidence of sporadic and community acquired legionnaires’ disease and exposure to potentially contaminated industrial aerosols.
Design: Geographical ecological approach using the postcode as the statistical unit. A multivariate Poisson regression model was used to model the relation between exposure to industrial aerosols and legionnaires’ disease.
Setting: Metropolitan France.
Main results: More than 1000 sources of industrial exposure (aerosol and plume of smoke) were identified in 42 French departments. After adjusting for confounding factors, there was a statistically increased incidence of legionnaires’ disease in postcodes with plume of smoke in comparison with postcodes without (RR=1.45, 95% CI=1.12 to 1.87), and in postcodes with more than one aerosol in comparison with postcodes without (RR=1.37, 95% CI=1.04 to 1.79).
Conclusion: These findings highlight that any industrial systems generating water aerosols should be regarded as potential sources of contamination for legionnaires’ disease.
- legionnaires’ disease
- industrial exposure
- Poisson modelling
- ecological study
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Footnotes
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Funding: this work was supported by the Fondation pour la Recherche Médicale, France.
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Conflicts of interest: none.
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