Sudden Interest in Dustmites

I saw a few articles on dustmites in my school. This created an interest in me to want to find out more about dustmites. One thing that captures my attention is the harmful effects of dustmites. You see...i have a 6-month old baby and I am very concern about his surroundings. Check this out..."house dust mite allergen that is the most common contributor to allergic asthma, allergic rhinitis and atopic eczema". I tried reading further..."it is the fecal dropping of the dust mites, as well as their broken-up exoskeletons which contain the offending antigen. This allergenic material is actually an enzyme that is used to digest their food". I never knew that house dustmites can be so powerful to harm human beings.