[Occurrence of housedust mites in dwellings. Relation to ventilation and humidity].
The concentration of house-dust mites (Der. spp.) was investigated in 96 Danish dwellings and bedroom air-exchange rates, humidity and temperature was measured contemporaneously in all the dwellings. A positive correlation was found between indoor air humidity and mite concentration, and an inverse correlation was found between house-dust mite concentration and indoor air-exchange. Dwellings of mite-allergic persons had a higher concentration of house-dust mites compared with those of the non-mite-allergic group. House-dust mite concentration was above the proposed limit in 76% of the homes of mite allergic persons and in 48% of the homes of non-sensitive persons. The high proportion of dwellings infested with house-dust mites, when compared with previous measurements, suggests an increased prevalence of house-dust mites in Danish dwellings. The results support the concept that reduced ventilation in dwellings involves a risk of increased house-dust mite exposure.
Harving
H
H
Lungemedicinsk afdeling, Arhus Kommunehospital.
Jensen
J K
JK
Dahl
R
R
D016902:Air Pollution, Indoor; D000485:Allergens / Q000009:adverse effects / Q000032:analysis*; D000818:Animals; D001249:Asthma / Q000209:etiology; D001513:Beds; D003718:Denmark; D003876:Dermatitis, Atopic / Q000209:etiology; D004391:Dust; D006798:Housing; D006801:Humans; D006813:Humidity; D008925:Mites; D014691:Ventilation
D000485:Allergens; D004391:Dust
Husstøvmideforekomst i boliger. Sammenhoeng med boligventilation og luftfugtighed.