Document Detail

Epidemiology of house-dust mites.
MedLine Citation:
PMID:  10096805     Owner:  NLM     Status:  MEDLINE    
Available epidemiologic data on the occurrence of house-dust mites in dwellings demonstrates a clear association between increased indoor air humidity and the increased occurrence of house-dust mites in house dust. Furthermore, in temperate climates, there is a threshold level of indoor air humidity of 7 g/kg (45% relative humidity at usual indoor air temperatures). Indoor air humidities below this level for extended periods will eradicate house-dust mites from dwellings. A reduction in inhabitant exposure to house-dust mites is implemented by reduction of indoor air humidity by controlled mechanical ventilation. Individual ventilation levels are estimated from the actual size of house, number of inhabitants, and average outdoor air humidity in winter. In contrast, more humid areas of the world with average outdoor humidities above 6-7 g/kg in winter will support uniformly large populations of house-dust mites, and reductions in indoor air humidity will have a comparatively minor effect on the occurrence of house-dust mites. Present-day building of energy-efficient houses with increased sealing of the building envelope, paralleled by a similar renovation of older houses, has increased indoor air humidity and is probably the cause of the almost fourfold increase in the occurrence of house-dust mites in Danish dwellings.
J Korsgaard
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Allergy     Volume:  53     ISSN:  0105-4538     ISO Abbreviation:  Allergy     Publication Date:  1998  
Date Detail:
Created Date:  1999-08-25     Completed Date:  1999-08-25     Revised Date:  2006-04-19    
Medline Journal Info:
Nlm Unique ID:  7804028     Medline TA:  Allergy     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  36-40     Citation Subset:  IM    
Department of Chest Diseases, Silkeborg County Hospital, Denmark.
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MeSH Terms
Allergens / analysis
Dust* / analysis
Mites / immunology,  physiology*
Reg. No./Substance:
0/Allergens; 0/Dust

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

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