Seasonal prevalence of allergenic mites in house dust of Kolkata Metropolis,India |
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Authors: | Sanjoy Podder Salil Kumar Gupta Goutam Kumar Saha |
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Institution: | (1) Entomology and Wildlife Biology Research Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India;(2) Department of Zoology, Darjeeling Government College, Darjeeling, 734101, India |
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Abstract: | During the past few decades, house dust mites have attracted worldwide interest among medical entomologists and acarologists
because of their importance in causing nasobronchial allergic disorders in human beings. House dust mites are present throughout
the year; however, their relative densities differ in different seasons and habitats. Because the prevalence of house dust
mite allergen is important epidemiologically and clinically, detailed knowledge on the seasonal abundance of important allergenic
mites is of great importance for better understanding of the pathogenesis of the disease. In view of this, a systematic survey
was carried out on the prevalence of total mites and four common allergenic mites in the city of Kolkata for two consecutive
years. Both bed and bedroom floor dust were collected separately from homes inhabited by asthmatic patients situated in different
corners of the city on monthly basis from January 2004 to December 2005. The population levels of total mites and four common
allergenic mites, namely Dermatophagoides pteronyssinus, D. farinae, Austroglycyphagus geniculatus, and Blomia tropicalis separately, were highest during the pre-monsoon period (March–May), irrespective of habitat, whereas densities were low in
all cases during winter (December–February). The study indicates that season had the most significant effect on the relative
abundance of house dust mites except Dermatophagoides farinae, irrespective of habitat. |
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Keywords: | Allergen Dust Mite Seasonal prevalence Kolkata India |
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