Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology
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The prevalence of asthma and allergic disease has been increasing in Hong Kong and environmental factors are thought to play a major role. ⋯ Major allergens of mite, cat and cockroach, and NO2 are present in varying quantities in residential homes in Hong Kong. Exposure to these environmental factors could be important in the development of asthma and allergic diseases in susceptible individuals.