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目的揭示山东省甲型病毒性肝炎(甲肝)发病趋势,探讨动态分析方法。方法对山东省1990～2006年甲肝疫情资料进行描述流行病学分析。结果山东省1990～2006年报告甲肝发病率从53.97/10万下降到1.14/10万,<10岁儿童甲肝病例所占比例从55.60%下降到5.12%,平均发病年龄从14.40岁,后移到40.19岁。结论山东省甲肝发病由流行转为散发,且有下降趋势;高发人群年龄后移;≥10岁甲肝病例男女性别比有扩大趋势,男女性年龄分布曲线差异也趋于扩大。
Objective To reveal the incidence of hepatitis A (A) in Shandong Province and to explore the dynamic analysis methods. Methods Epidemiological analysis of hepatitis A outbreak data from 1990 to 2006 in Shandong Province was conducted. Results The incidence of hepatitis A in Shandong Province decreased from 53.97 / 100000 to 1.14 / 100000 from 1990 to 2006. The proportion of hepatitis A cases dropped from 55.60% to 5.12% in 10-year-old children and the average age of onset was 14.40 years old 40.19 years old. Conclusions The incidence of hepatitis A in Shandong Province turned from epidemic to exuded, and there was a downward trend. The age of high-risk population was shifted backward. The gender ratio of hepatitis A≥10 years old had an increasing trend, and the difference of age distribution between men and women also tended to widen.