Document Detail

House-dust mites and summer cottages.
MedLine Citation:
PMID:  16076308     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Estimated indoor climate conditions in unheated summer cottages offers house-dust mites unfavorable temperature and feeding conditions while giving them optimum humidity conditions. We aimed to estimate the exposure level of house-dust mites in summer cottages. METHODS: A total of 37 summer cottages were sampled for house dust and storage mites in three locations and the results compared with samples from 33 patients suspected of house-dust mite allergy and living in ordinary houses. The processed dust samples were investigated by microscopy and exposure levels given as number of mites per 0.1 g dust. RESULTS: The summer cottages were without exception all heavily infested with threefold or higher concentrations of both house dust and storage mites in comparison with ordinary houses. In unheated summer cottages were found tropical high concentrations of house dust and storage mites with a median concentration of house-dust mites in mattress dust of 2000 house-dust mites/g of dust which corresponds to an average of 40 microg allergen/g of mattress dust. CONCLUSIONS: As a probable consequence of high indoor air humidity conditions in unheated summer cottages in winter, dust samples contained threefold or higher concentrations of house dust and storage mites. Indoor humidity conditions thus more than compensated for lack of continuous supply of skin scales from human beings and an unfavorable low indoor air temperature. The uniform high mite exposure in summer cottages is likely to imply disease deterioration in patients already allergic to mites.
J Korsgaard; H Harving
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Allergy     Volume:  60     ISSN:  0105-4538     ISO Abbreviation:  Allergy     Publication Date:  2005 Sep 
Date Detail:
Created Date:  2005-08-03     Completed Date:  2005-11-03     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7804028     Medline TA:  Allergy     Country:  Denmark    
Other Details:
Languages:  eng     Pagination:  1200-3     Citation Subset:  IM    
Department of Chest Diseases, Aarhus University Aalborg, Aalborg, Denmark.
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MeSH Terms
Floors and Floorcoverings

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

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