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Clin Exp Allergy. 1996 Nov;26(11):1243-5.

New mattresses: how fast do they become a significant source of exposure to house dust mite allergens?

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North West Lung Centre, Wythenshawe Hospital, Manchester, UK.



Sensitization and exposure to mite allergens is a major risk factor for asthma. Little is known about the rate of build-up of allergens in the mite micro-habitats.


To investigate the rate of increase in mite allergen levels in new mattresses.


Der p 1 was measured in the dust samples collected from six identical new single mattresses over a period of 2 years.


Der p 1 increased significantly at 4 months as compared with baseline level (P < 0.01), but no difference was found between the concentrations at 4, 8, 12 and 24 months. There was a significant correlation between Der p 1 concentration in mattresses at 4, 8, 12 and 24 months and Der p 1 levels in the bedroom carpet at the beginning of the study.


New mattresses can become a significant source of exposure to mite allergens after a short period of time (< 4 months). There is little justification for advising mite sensitive patients to replace their mattresses as a part of avoidance regime.

[Indexed for MEDLINE]

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