Non-Seasonal Variation of Airborne Aspergillus Spore Concentration in a Hospital Building.
Michael Oberle,Markus Reichmuth,Reto Laffer,Cornelia Ottiger,Hans Fankhauser,Thomas Bregenzer +5 more
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TLDR
The airborne Aspergillus spore concentration was constantly low throughout the whole year, at a median level of 2 spores/m3 (inter-quartile range = IQR 1–4), and displayed no seasonal dependency.Abstract:
Nosocomial fungal infections are gaining increased attention from infectiologists. An adequate investigation into the levels of airborne Aspergillus and other fungal spores in hospital settings, under normal conditions, is largely unknown. We monitored airborne spore contamination in a Swiss hospital building in order to establish a seasonally-dependent base-line level. Air was sampled using an impaction technique, twice weekly, at six different locations over one year. Specimens were seeded in duplicate on Sabouraud agar plates. Grown colonies were identified to genus levels. The airborne Aspergillus spore concentration was constantly low throughout the whole year, at a median level of 2 spores/m3 (inter-quartile range = IQR 1–4), and displayed no seasonal dependency. The median concentration of other fungal spores was higher and showed a distinct seasonal variability with the ambient temperature change during the different seasons: 82 spores/m3 (IQR 26–126) in summer and 9 spores/m3 (IQR 6–15) in winter. The spore concentration varied considerably between the six sampling sites in the building (10 to 26 spores/m3). This variability may explain the variability of study results in the literature.read more
Citations
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High Diversity of Fungi in Air Particulate Matter
TL;DR: By DNA analysis, pronounced differences in the relative abundance and seasonal cycles of various groups of fungi in coarse and fine particulate matter are found, with more plant pathogens in the coarse fraction and more human pathogens and allergens in the respirable fine particle fraction.
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Seasonal variation of the dominant allergenic fungal aerosols – One year study from southern Indian region
TL;DR: This study sampled and quantified the three most dominantly found allergenic airborne fungi from ambient PM10 samples using the quantitative PCR (qPCR) technique in a southern tropical Indian region for one full year to obtain firsthand and preliminary information about the causative fungal allergen to the inhabitants exposed to bioaerosols.
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The effect of temperature on airborne filamentous fungi in the indoor and outdoor space of a hospital.
TL;DR: Investigation of the effects of three incubation temperature on the density and composition of airborne fungi in an indoor and outdoor space of hospital provided that incubationTemperature had effect on airborne fungi remarkably.
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Comparison of fungal spores concentrations measured with wideband integrated bioaerosol sensor and Hirst methodology
S. Fernández-Rodríguez,R. Tormo-Molina,N. Lemonis,Bernard Clot,David O'Connor,David O'Connor,John R. Sodeau +6 more
TL;DR: In this paper, a comparison of traditional and novel methodologies for airborne spores detection (i.e. the Hirst Burkard trap and WIBS-4) and the first quantitative study of airborne fungal concentrations in Payerne (Western Switzerland) as well as their relation to meteorological parameters was provided.
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Seasonal clustering of sinopulmonary mucormycosis in patients with hematologic malignancies at a large comprehensive cancer center
Shobini Sivagnanam,Dhruba J. SenGupta,Daniel Hoogestraat,Rupali Jain,Zach Stednick,David N. Fredricks,David N. Fredricks,Paul Hendrie,Estella Whimbey,Sara Podczervinski,Elizabeth M Krantz,Jeffrey S. Duchin,Jeffrey S. Duchin,Steven A. Pergam +13 more
TL;DR: Sinopulmonary Mucorales clusters at the authors' center had a seasonal variation which appeared to be related to temperature and precipitation, which may need to be considered when considering center specific fungal prevention and prophylaxis strategies for high-risk patients.
References
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Journal ArticleDOI
Profiles of Airborne Fungi in Buildings and Outdoor Environments in the United States
TL;DR: This is the largest study of airborne indoor and outdoor fungal species and concentrations conducted with a standardized protocol to date and provides industrial hygienists, allergists, and other public health practitioners with comparative information on common culturable airborne fungi in the United States.
Journal ArticleDOI
Zygomycosis in Europe: analysis of 230 cases accrued by the registry of the European Confederation of Medical Mycology (ECMM) Working Group on Zygomycosis between 2005 and 2007
Anna Skiada,Livio Pagano,Andreas H. Groll,Stephan Zimmerli,Bertrand Dupont,Katrien Lagrou,Cornelia Lass-Flörl,Emilio Bouza,Nikolay Klimko,Peter Gaustad,Malcolm Richardson,Petr Hamal,Murat Akova,Jacques F. Meis,J. L. Rodriguez-Tudela,Emmanuel Roilides,A. Mitrousia-Ziouva,George Petrikkos +17 more
TL;DR: Administration of amphotericin B and surgery, where feasible, significantly improve survival and the most common manifestations of zygomycosis were pulmonary, rhinocerebral and soft tissue.
Journal ArticleDOI
High diversity of fungi in air particulate matter
TL;DR: In this article, the relative abundance and seasonal cycles of various groups of fungi in coarse and fine particulate matter, with more plant pathogens in the coarse fraction and more human pathogens and allergens in the respirable fine particle fraction (< 3 microm).
High Diversity of Fungi in Air Particulate Matter
TL;DR: By DNA analysis, pronounced differences in the relative abundance and seasonal cycles of various groups of fungi in coarse and fine particulate matter are found, with more plant pathogens in the coarse fraction and more human pathogens and allergens in the respirable fine particle fraction.
Journal ArticleDOI
What makes Aspergillus fumigatus a successful pathogen? Genes and molecules involved in invasive aspergillosis
Ana Abad,Jimena Victoria Fernandez-Molina,Joseba Bikandi,Andoni Ramírez,Javier Margareto,Javier Sendino,Fernando L. Hernando,José Pontón,Javier Garaizar,Aitor Rementeria +9 more
TL;DR: The virulence of this fungus is multifactorial, associated with its structure, its capacity for growth and adaptation to stress conditions, its mechanisms for evading the immune system and its ability to cause damage to the host.
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