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Objective To analyze the allergic status to common inhalant allergens and food allergens in clinical patients in Harbin in northeastern China and provide evidence to develop the prevention strategy of allergic disease.
Methods The data were collected from 5 473 patients with clinical suspected allergic diseases seeking medical care in the Second Affiliated Hospital of Harbin Medical University. Among these patients, 2 530 (46.2%) were males aged 0-86 years, the youngest was only 1 month old and 2 579 (47.1%) were young children and teenagers. The serum specific Immunoglobulin E (sIgE) to 14 kinds of common allergens and serum total IgE were detected by using AllergyScreen test (Mediwiss Analytic GmbH, Moers, Germany).
Results In 5 473 subjects the positive rate of sIgE was 33.1%(n=1 813). Cow milk (6.9%) and wheat (3.1%) were the most common food allergens, followed by house dust mite mix (12.5%) and mould mix (9.4%) and the age and gender specific differences in the positive rate were significant. For the children aged<7 years the positive rates to cow milk, beef-mutton, and egg white/egg yolk were high, but the positive rates to house dust mite mix, ragweed estragon, and mould mix were low (P<0.05). For the adults the positive rates to aeroallergens were high while the rates to food allergens were low.
Conclusion The results from this study showed that the food allergens in Harbin had geographic characteristics, which support the viewpoint that the environment factors play an important role in the incidence of allergic diseases. Also, the detection of sIgE and total IgE are essential to identify relevant allergens for the purpose of early diagnosis, management and prevention of allergic disease.
