Indoor emissions as a primary source of airborne allergenic fungal particles in classrooms

Environmental Science & Technology
Naomichi YamamotoJordan Peccia

Abstract

This study quantifies the influence of ventilation and indoor emissions on concentrations and particle sizes of airborne indoor allergenic fungal taxa and further examines geographical variability, each of which may affect personal exposures to allergenic fungi. Quantitative PCR and multiplexed DNA sequencing were employed to count and identify allergenic fungal aerosol particles indoors and outdoors in seven school classrooms in four different countries. Quantitative diversity analysis was combined with building characterization and mass balance modeling to apportion source contributions of indoor allergenic airborne fungal particles. Mass balance calculations indicate that 70% of indoor fungal aerosol particles and 80% of airborne allergenic fungal taxa were associated with indoor emissions; on average, 81% of allergenic fungi from indoor sources originated from occupant-generated emissions. Principal coordinate analysis revealed geographical variations in fungal communities among sites in China, Europe, and North America (p < 0.05, analysis of similarity), demonstrating that geography may also affect personal exposures to allergenic fungi. Indoor emissions including those released with occupancy contribute more substantially...Continue Reading

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Citations

Dec 24, 2015·Microbiome·Aaron J Prussin, Linsey C Marr
Apr 14, 2016·Environmental Science & Technology·Junhyup KimByung Yang Lee
Oct 28, 2016·Journal of Occupational and Environmental Hygiene·Brett J GreenJu-Hyeong Park
Apr 22, 2020·Chemical Society Reviews·Zhe Peng, Jose L Jimenez
Nov 5, 2020·Frontiers of Environmental Science & Engineering·Shuai LiQiang He
Nov 20, 2020·Microorganisms·Carla ViegasCélia Alves
May 3, 2021·BMC Microbiology·Yumna NageenLorenzo Pecoraro
Apr 9, 2021·Molecular Ecology·Pedro M Martin-SanchezHåvard Kauserud
Dec 2, 2020·Environmental Science & Technology·Bridget HegartyJordan Peccia

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