University of Tehran

House dust mite contamination in hotels and inns in bandar abbas, south of Iran

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Mites dwelling in house dusts have become recognized in the past 30 years as the most important source of allergens in human habitations (Mumcuoglu et al., 1999). House dust mites have a worldwide distribution; however there are differences in the mite numbers and allergen concentration in different locations (Koosgaard, 1998). Tow pyroglyphide mite Species namely Dermatophagoides pteronyssinus (Trouessart) and Dermatophagoides farinae Hughes (Acari: Astigmata: pyroglyphidae) associated with allergic diseases, such as bronchial asthma, rhinitis and atopic dermatitis, are the most important causative factors among indoor allergens. (Platts-Mills and Chapman, 1987). D. pteronyssinus predominates over most house dust mite species worldwide and is the most frequent species in tropical and subtropical areas. D. farinae is most common in dry, continental climates and is rare in coastal climates (Arlian et al., 1992; Jackson et al., 2005). The allergen exposure degree can be estimated by the number of mites and the concentration of their allergens detected in the house dust. (Zheltikova et al., 1994). Concentrations of greater than 10 mg/g mite allergens in the mattress are a risk factor for an increase in symptoms in sensitized individuals (Peat et al., 1996). In Iran, the knowledge of the house dust mite’s distribution is still poor and previously reported have shown that D. pteronyssinus was the more prevalent mite while D. farinae was less frequent (Amoli and Cunnington, 1977; Motavalli-Haghi et al., 2003).

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