Objective To investigate the prevalence of allergens in asthmatic children in Haikou. Methods A total of 10 241 children of 0~14 years old were involved and investigated by cluster sampling, in which 324 children were diagnosed as asthma. Allergic sensitization was studied with questionnaire, skin prick tests and specific IgE mea-surements. Results Among the 324 asthmatic children, 224 (69.1%) had allergy history, including 91 cases (28%) of ec-zema, 64 cases (19.8%) of food allergy, 28 cases (8.6%) of drug allergy, 18 cases (5.6%) of cigarette smoke allergy, 19 cases (5.9%) of decoration smell allergy, 13 cases (4.0%) of pet allergy, 11 cases (3.4%) of cooking oil smell allergy, and 9 cases (2.8%) of pollen allergy. A total of 269 asthmatic children (83.0%) showed SPT positive reaction, with 292 cases (90.1%) of Dermatophagoides pteronyssinus (Der p), 289 cases (89.2%) of Dermatophagoides farina (Der f), 277 cases (85.5%) of Blomia tropicalis (Blo t), 64 cases (19.6%) of cockroach, 11 cases (3.4%) of mould, 11 cases (3.4%) of pol-len, 38 cases (11.7%) of cat dander, and 82 cases (25.3%) of dog dander. The specific IgE-positive rate to inhaled aller-gens was 72.2%(235 cases), with 69.8%(226 cases) to mites, which was the highest. The specific IgE-positive rate to food allergens was 28.7%(93 cases), with 25.3%(82 cases) to milk, 9.9%(32 cases) to egg white, 22.8%(74 cases) to crab and shrimp, 9.0%(24 cases) to tropical fruit, and 8.3%(27 cases) to fish. Comparison of inhaled allergen specific IgE-positive rate between different age groups showed that, the positive rate to dust mites, cockroach was significantly higher in 3~7 years old group than 0~3 years old group old, and the positive rate to dust mites, cockroach, dog dander, cat dander was higher in 7~14 years old group than 0~3 years old group. Conclusion House dust mites and Blomia tropicalis are the major allergen sources among asthmatic children in Haikou. Dog dander, cat dander and cockroach are also important allergens. The influence of food allergy on asthma cannot be ignored in this region, especially milk, egg, sea food and tropical fruit.%目的 了解海口市儿童哮喘常见变应原状况.方法 2012年9~12月本研究采取整群抽样的流行病学方法调查海口市0~14岁儿童10 241名,确诊哮喘患儿324例,对所有哮喘患儿进行过敏史问卷调查及皮肤点刺试验和血清过敏原特异性IgE (SIgE)抗体检测.结果 324例哮喘患儿中224例(69.1%)过敏史阳性,其中湿疹91例(28.1%),食物过敏64例(19.8%),药物过敏28例(8.6%),香烟过敏18例(5.6%),装修气味过敏19例(5.9%),宠物过敏13例(4.0%),油烟过敏11例(3.4%),花粉过敏9例(2.8%).皮肤点刺阳性率为83.0%(269例),其中屋尘螨及粉尘螨阳性率分别为90.1%(292例)及89.2%(289例),热带螨为85.5%(277例),蟑螂19.6%(64例),霉菌3.4%(11例),花粉3.4%(11例),猫毛11.7%(38例),狗毛25.3%(82例).吸入性过敏原IgE阳性率为72.2%(235例),以尘螨为最高(69.8%,226例);食入性过敏原IgE阳性率为28.7%(93例),牛奶占25.3%(82例),鸡蛋白占9.9%(32例),虾蟹占22.8%(74例),热带水果占9.0%(24例),鱼占8.3%(27例).不同年龄组哮喘患儿吸入性过敏原特异性IgE阳性率比较显示,3~7岁组屋尘螨、蟑螂阳性率高于0~3岁组(P<0.05),7~14岁组屋尘螨、蟑螂、狗毛上皮、猫毛上皮阳性率高于0~3岁组(P<0.05).结论 海口市儿童哮喘常见变应原以屋尘螨、粉尘螨和热带螨为主,狗毛、蟑螂及猫毛比例也较高.食入性过敏原以牛奶、鸡蛋白多见,且虾蟹、热带水果致敏对本地区儿童哮喘的影响也不容忽视.
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