Special aids designed to reduce asthma symptoms 'are a waste of time' - Daily Mail 16th April 2008

Special vacuum cleaners and mattress protectors used by millions of asthma sufferers are a waste of time and money, researchers say. An analysis of dozens of studies revealed techniques widely believed to combat the allergy-inducing house dust mite have little or no effect. The Danish researchers said: 'We can conclude with confidence that there is no need to buy expensive vacuum cleaners or mattress covers or to use chemical methods against house dust mites, because these treatments do not work.'

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