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Bioaerosols Play a Major Role in the Nasopharyngeal Microbiota Content in Agricultural Environment

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  • Hamza Mbareche

    (Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada
    Département de Biochimie, de Microbiologie et de Bio-Informatique, Faculté des Sciences et de Génie, Université Laval, Québec, QC G1V 0A6, Canada)

  • Marc Veillette

    (Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada)

  • Jonathan Pilote

    (Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada
    Département de Biochimie, de Microbiologie et de Bio-Informatique, Faculté des Sciences et de Génie, Université Laval, Québec, QC G1V 0A6, Canada)

  • Valérie Létourneau

    (Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada)

  • Caroline Duchaine

    (Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada
    Département de Biochimie, de Microbiologie et de Bio-Informatique, Faculté des Sciences et de Génie, Université Laval, Québec, QC G1V 0A6, Canada)

Abstract

Background : Bioaerosols are a major concern for public health and sampling for exposure assessment purposes is challenging. The nasopharyngeal region could be a potent carrier of long-term bioaerosol exposure agents. This study aimed to evaluate the correlation between nasopharyngeal bacterial flora of swine workers and the swine barns bioaerosol biodiversity. Methods : Air samples from eight swine barns as well as nasopharyngeal swabs from pig workers ( n = 25) and from a non-exposed control group ( n = 29) were sequenced using 16S rRNA gene high-throughput sequencing. Wastewater treatment plants were used as the industrial, low-dust, non-agricultural environment control to validate the microbial link between the bioaerosol content (air) and the nasopharynxes of workers. Results : A multivariate analysis showed air samples and nasopharyngeal flora of pig workers cluster together, compared to the non-exposed control group. The significance was confirmed with the PERMANOVA statistical test ( p -value of 0.0001). Unlike the farm environment, nasopharynx samples from wastewater workers did not cluster with air samples from wastewater treatment plants. The difference in the microbial community of nasopharynx of swine workers and a control group suggest that swine workers are carriers of germs found in bioaerosols. Conclusion: Nasopharynx sampling and microbiota could be used as a proxy of air sampling for exposure assessment studies or for the determination of exposure markers in highly contaminated agricultural environments.

Suggested Citation

  • Hamza Mbareche & Marc Veillette & Jonathan Pilote & Valérie Létourneau & Caroline Duchaine, 2019. "Bioaerosols Play a Major Role in the Nasopharyngeal Microbiota Content in Agricultural Environment," IJERPH, MDPI, vol. 16(8), pages 1-22, April.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:8:p:1375-:d:223403
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    References listed on IDEAS

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    1. Annalaura Carducci & Gabriele Donzelli & Lorenzo Cioni & Ileana Federigi & Roberto Lombardi & Marco Verani, 2018. "Quantitative Microbial Risk Assessment for Workers Exposed to Bioaerosol in Wastewater Treatment Plants Aimed at the Choice and Setup of Safety Measures," IJERPH, MDPI, vol. 15(7), pages 1-12, July.
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    Cited by:

    1. Nicola Mucci & Eleonora Tommasi & Annarita Chiarelli & Lucrezia Ginevra Lulli & Veronica Traversini & Raymond Paul Galea & Giulio Arcangeli, 2022. "WORKbiota: A Systematic Review about the Effects of Occupational Exposure on Microbiota and Workers’ Health," IJERPH, MDPI, vol. 19(3), pages 1-18, January.

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