20 million Americans allergy or asthma symptoms allergy or asthma symptoms won't reach the mites living deep inside the stuffing Asthma and Allergy Foundation of America (AAFA) Asthma and Allergy Foundation of America Asthma and Allergy Foundation of America dust mites can cause allergic reactions 20 million Americans allergy or asthma symptoms Asthma Foundation of America "Dust Mite Allergy." Asthma and Allergy Foundation of America Dust Mite Allergy allergen Dust mitesthrive 20 million Americans won't reach the mites living deep inside the stuffing 20 million Americans "Dust Mite Allergy." dust mite won't reach the mites living deep inside the stuffing 20 million Americans Asthma and Allergy Foundation of America Asthma and Allergy Foundation of America, Dust Mite Allergy