Encasings: effective asthma protection

Mite-resistant bed covers – known as encasings – can protect children with asthma, and who also suffer from a house dust mite allergy, from severe seizures. This was found by a British study.

Encasings: effective asthma protection

Those who are allergic to house dust mites are often also affected by asthma. As 90 per cent of the total number of house dust mites in a dwelling are concentrated in the bed, protective covers can provide relief. The so-called encasings ensure that cushions, blankets and mattresses are all insulated against allergies, reduce the allergenic exposure to mites.

Scientifically tested

British researchers carried out a study on children between the ages of 3 and 17 years with asthma and concomitant house dust mite allergy. Its hypothesis: A reduction in the concentration of mite allergens should also reduce the number of serious asthma attacks. For this reason they let 123 out of 286 children sleep in mildew-proof bed-covers for a period of one year; the 118 children in the control group received identical-looking covers without mite-repellent properties. The result is clear: dust samples showed that the concentration of mite allergens in the first group fell by 84 per cent. In comparison to the placebo group, the incidence of hospitalisation as a result of asthma attacks fell by 45 per cent in this group of children.

A sensible measure

The intermediate covers are mite- and allergen-repellent, but have high air and water vapour permeability. In addition to high durability, they are easy to clean and hygienically washable at 60°C to 95°C. Some carry the  Allergy Seal of Quality.


Study: Preventing Severe Asthma Exacerbations in Children: A Randomised Trial of Mite Impermeable Bedcover, Murray, Clare S; Foden, Philip; Sumner, Helen; Shepley, Elizabeth; Custovic, Adnan; Simpson, Angela. In: American Journal of Respiratory and Critical Care Medicine, Vol. 196, No. 2, 0, 10.03.2017, p. 0.



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