J Asthma Allergy Clin Immunol.
2001 Apr;21(2):198-204.
Prevalence of atopic rhinitis and causative allergens in children living in rural areas of Cheju island
- Affiliations
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- 1Department of Pediatrics, Cheju National University College of Medicine.
- 2Department of Preventive Medicine, Cheju National University College of Medicine.
- 3Department of Internal Medicine, Seoul National University College of Medicine. youyoung@plaza.snu.ac.kr
- 4Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center.
Abstract
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BACKGROUND: Atopic diseases have been increasing according to changes in life style and indoor environments. Atopic rhinitis is a prevalent atopic disease in children, but the prevalence has been reported differently according to geographic areas.
OBJECTIVE
This study was conducted to elucidate the prevalence of childhood atopic rhinitis and to identify the distribution of causative allergens in total children living in rural areas of Cheju island. METHOD: A total of 7,145 subjects aged 7-15 years in South Cheju County was recruited in this study. They responded to an ISAAC questionnaire and underwent allergy skin prick test with common aeroallergens. Chronic rhinitis was positive in this respect if subjects experienced two or more rhinitis symptoms such as sneezing, runny nose, itchy nose and nasal blockage, which were not related to the common cold. Atopy was regarded as positive when the wheal caused by one or more of the common allergens was the same or larger than that caused by histamine.
RESULTS
The prevalence of chronic rhinitis was 10.5%. The prevalence of chronic rhinitis was the same between girls and boys, but higher as the ages of the subjects were older (7-9 years: 7.7%; 10-12: 10.6%; 13-15: 12.3%, p< 0.001). The atopy rate was 59.7%, meaning that the prevalence of atopic rhinitis was 6.2% and non-atopic rhinitis 4.2%. The common sensitizing allergens in decreasing order were Dermatophagoides pteronyssinus (40.4%), D. farinae (36.3%), citrus red mite (16.4%), cockroach (14.4%), outdoor Fungi (9.8%), Hop Japanese (5.6%) and Japanese cedar (4.5%) pollens.
CONCLUSION
The prevalence of atopic rhinitis was 6.2% and the causative allergens such as citrus red mite and Japanese cedar pollen were different from the Korean mainland area.
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