[Sensitization to common airborne allergens in school children with bronchial asthma]

W Jedrychowski, E Flak, E Mróz, G Lis
Przegla̧d Lekarski 2000, 57 (9): 441-5
The main purpose of the paper was to assess the prevalence of atopy in the population of preadolescent children in Krakow on the basis of allergic skin testing to airborne allergens and to look into the relationship between atopy and chronic asthma-like respiratory symptoms. The field study was carried out in 1998 among 311 children being the subgroup of the cohort of 1044 children included in the 3-year follow-up in Krakow. The health assessment accounted for the standardised interviews and skin prick testing to 11 common airborne allergens. In the total, the positive allergic reaction at least to only one allergen was found in 32.5% children, and it was more prevalent in boys than in girls (40.4% vs 28.1%). Allergy only to indoor allergens was present in 9.7% children, allergy only to outdoor allergens in 9.7%, and allergy both to outdoor and indoor allergens was confirmed in 13% persons. Most frequently, allergy was established to house mites: Dermatophagoides pter. (16.2%), Dermatophagoides farinae (12.0%) and to cat dander (11.4%). Asthma-like symptoms occurred in 11.0% of children and asthma diagnosed by physician in 7.8% of the sample under the study. The results of this study proved that the prevalence of asthma was about twice so high in boys than in girls. The risk of asthma-like symptoms and/or asthma diagnosed by physician increased significantly with the number of positive allergic tests to airborne allergens (OR = 1.30; 95% CI: 1.11-1.52) and atopy in mother (OR = 1.84; 95% CI: 1.03-3.37).

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