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目的分析保定市2004~2013年<15岁儿童乙型病毒性肝炎(乙肝)的流行病学特征,为预防控制乙肝提供参考。方法乙肝病例数据来源于中国免疫规划监测信息管理系统,采用描述性流行病学方法进行分析。结果2004~2013年报告<15岁儿童乙肝病例961例,年平均发病率为5.29/10万,各年发病率在0.24/10万~16.78/10万之间,总体呈下降趋势(x~2=653.58,P﹤0.001)。发病年龄主要集中9~14岁,发病率为10.6/10万。有乙肝疫苗(HepB)免疫史病例占41.94%,无免疫史和免疫史不详占58.06%。结论保定市<15岁儿童乙肝发病呈逐年下降趋势,发病年龄分布主要集中2002年HepB纳入免疫规划前的年龄段,应继续加强现有的控制乙肝免疫策略。
Objective To analyze the epidemiological characteristics of hepatitis B in children aged <15 years from 2004 to 2013 in Baoding, and to provide reference for the prevention and control of hepatitis B. Methods The data of hepatitis B cases came from China Immunization Program Monitoring Information Management System and analyzed by descriptive epidemiological method. Results A total of 961 cases of hepatitis B were reported in children aged <15 years from 2004 to 2013, with an average annual incidence of 5.29 / 100 000 and an annual incidence of 0.24 / 100,000 to 16.78 / 100 000 with a general downward trend (x ~ 2 = 653.58, P <0.001). The age of onset mainly concentrated in 9 to 14 years old, the incidence rate of 10.6 / 100000. Hepatitis B vaccine (HepB) immunization history of cases accounted for 41.94%, no history of immunization and immune history is unknown accounted for 58.06%. Conclusions The incidence of hepatitis B in children under 15 years of age in Baoding City has been declining year by year. The age of onset mainly focuses on the age group before HepB was included in the immunization plan in 2002. The current strategy of controlling hepatitis B immunization should be further strengthened.