Journal ArticleDOI
Bioaerosol levels and the indoor air quality of laboratories in Bangkok metropolis
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TLDR
In this article, the levels of bioaerosols (i.e., culturable fungi and bacteria, and fungal spores) in laboratories in the Bangkok metropolitan area were investigated.Abstract:
Bioaerosols are major air pollutants commonly found both indoors and outdoors. High exposure levels may result in various adverse health outcomes. Laboratories, which are indoor environments carefully designed for specific purposes, may contain high levels of bioaerosols, which may threaten worker’s health, and contaminate experimental results. This study investigated the levels of bioaerosols (i.e., culturable fungi and bacteria, and fungal spores) in laboratories in the Bangkok metropolitan area. Air samples were collected from 14 Class I and one Class II laboratories by using a single-stage impactor and a VersaTrap spore trap cassette. Colonies were counted after 72 h and 48 h of incubation for culturable fungi and bacteria, respectively. Culturable fungi and fungal spores were identified based on their morphological characteristics. Associations between bioaerosols and indoor air parameters and laboratory characteristics were evaluated. The concentrations (mean ± SD) of culturable bacteria, culturable fungi, and fungal spores were 87.0 ± 97.8 CFU/m3, 294.9 ± 376.1 CFU/m3, and 771.8 ± 545.3 spores/m3, respectively. Aspergillus/Penicillium, ascospores, and Cladosporium were common fungal spore taxa in the laboratories. Culturable fungi significantly increased with the number of staff and visible molds, whereas water leaks and culturable fungi significantly increased fungal spore concentrations. Culturable bacteria were positively associated with the numbers of trash bins and − 80 °C freezers. Although bioaerosol concentrations were considerably lower in the studied laboratories, proper indoor air management is still suggested in order to reduce emissions and exposure. This can help workers avoid adverse health outcomes and reduce the chance of experimental contamination.read more
Citations
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Human Inhalation Exposure to Aerosol and Health Effect: Aerosol Monitoring and Modelling Regional Deposited Doses
TL;DR: The viability and culturability for the bioaerosol showed no significant difference in all environments, and the correlation between inhalable PM and bio aerosol obtained from the six-stage impactor showed that the coefficient of determination between coarse particles and cultivable airborne bacteria ranged from 0.70 (elderly and homes) to 0.84 (school) during the summer season.
Journal ArticleDOI
Microbial diversity of bioaerosol inside sports facilities and antibiotic resistance of isolated Staphylococcus spp.
TL;DR: Assessment of microbial air quality inside several sports facilities and at a sports field indicated large fluctuations in average concentrations of heterotrophic bacteria, while fungi in the sports field was dominated by the genus Cladosporium, followed by Penicillium, Fusarium and Acremonium.
Journal ArticleDOI
An opinion review on sampling strategies, enumeration techniques, and critical environmental factors for bioaerosols: An emerging sustainability indicator for society and cities
TL;DR: In this article, a review of the current state of bio-aerosol sampling approaches, devised detection techniques, survival and transport factors, and associated health effects is presented, with a vision of developing reliable sampling methods and detection techniques.
Journal ArticleDOI
Diversity of Bioaerosols in Selected Rooms of Two Schools and Antibiotic Resistance of Isolated Staphylococcal Strains (Bydgoszcz, Poland): A Case Study
TL;DR: Evaluated microbiological air pollution in libraries, cafeterias and selected classrooms of two schools in Bydgoszcz city, northern Poland and determining the antibiotic resistance of Staphylococcal strains isolated from the indoor air found that Levofloxacin and gentamicin were the most effective antibiotics and no multidrug-resistant strains were identified.
References
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Dispersal in microbes: fungi in indoor air are dominated by outdoor air and show dispersal limitation at short distances
TL;DR: Results show that at the local level, outdoor air fungi dominate the patterning of indoor air, providing additional support for the growing evidence that dispersal limitation, even on small geographic scales, is a key process in structuring the often-observed distance–decay biogeographic pattern in microbial communities.
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The effect of environmental parameters on the survival of airborne infectious agents
TL;DR: This review summarizes the various environmental factors that may affect the airborne survival of viruses, bacteria and fungi, with the aim of highlighting specific aspects of environmental control that may eventually enhance the aerosol or airborne infection control of infectious disease transmission within hospitals.
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Profiles and seasonal distribution of airborne fungi in indoor and outdoor environments at a French hospital.
Marc Sautour,Nathalie Sixt,Frédéric Dalle,C. L’Ollivier,Vitalie Fourquenet,Céline Calinon,Kusum Paul,Stéphanie Valvin,Alix Maurel,Serge Aho,Gérard Couillault,Claire Cachia,O. Vagner,B. Cuisenier,Denis Caillot,Alain Bonnin +15 more
TL;DR: A one-year prospective survey of fungal air contamination was conducted in outdoor air and inside two haematological units of a French hospital, finding that Penicillium sp.
Journal ArticleDOI
A pilot investigation into associations between indoor airborne fungal and non-biological particle concentrations in residential houses in Brisbane, Australia
Megan Hargreaves,Sandhya Parappukkaran,Lidia Morawska,Jane Hitchins,Congrong He,Dale Gilbert +5 more
TL;DR: Examination of associations between the concentration levels of airborne particles and fungi measured in 14 residential suburban houses in Brisbane showed that the fungal spore concentrations were related directly to the distance from the source, in a very similar way in which the submicrometre particles originating from vehicle emissions from a road, were dependent on the distance to the road.