Document Detail

Dustborne fungi in large office buildings.
MedLine Citation:
PMID:  12086106     Owner:  NLM     Status:  MEDLINE    
Fungi are ubiquitous in our daily environments. However, their effects on office workers' health are of great interest to many environmental health researchers. Dust has been considered an important reservoir of indoor fungi from which aerosolization and exposure could occur. We have examined the characteristics of dustborne fungal populations recovered from floors and chairs in office buildings. We investigated twenty-one offices in four office buildings in Boston, MA over a year beginning May 1997. We conducted intensive environmental sampling every six weeks to measure culturable dustborne fungi from floors and chairs, surface dust levels and water activity in carpeting. Carbon dioxide, temperature, and relative humidity were monitored continuously. Concentrations of total dustborne fungi recovered from floors were positively related to carbon dioxide (beta = 0.00064; p-value = 0.0002) and temperatures between 20 and 22.5 degrees C (p-value = 0.0026). Also, total fungal concentrations in floors gradually increased over the year (p-value = 0.0028). Total fungi recovered from chairs varied significantly by season (p-value < 0.0001), highest in September and lowest in March, and were positively correlated with dust loads in floors (beta = 0.25; p-value < 0.0001). We used principal component analysis (PCA) to reduce various observed fungal species to fewer factors. Six groups (PCA factors) were obtained for dustborne fungi recovered from both floors and chairs. The models of the first PCA factors for both floors and chairs were similar to those for total fungal concentrations. The results of this study provide essential information to further evaluate the effects of dustborne fungi on office workers' health.
Hsing Jasmine Chao; Donald K Milton; Joel Schwartz; Harriet A Burge
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Mycopathologia     Volume:  154     ISSN:  0301-486X     ISO Abbreviation:  Mycopathologia     Publication Date:  2002  
Date Detail:
Created Date:  2002-06-27     Completed Date:  2002-12-13     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7505689     Medline TA:  Mycopathologia     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  93-106     Citation Subset:  IM    
Department of Environmental Health, Harvard School of Public Health, Boston, MA 02115, USA.
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MeSH Terms
Air Microbiology*
Air Pollutants*
Air Pollution, Indoor*
Floors and Floorcoverings
Fungi / growth & development,  isolation & purification*
Sick Building Syndrome / microbiology
Spores, Fungal
Grant Support
Reg. No./Substance:
0/Air Pollutants; 0/Dust

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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