1999-2008年浙江省丽水市病毒性乙型肝炎流行特征分析

Epidemiology of hepatitis B in Lishui,Zhejiang,1999-2008

目的了解浙江省丽水市病毒性乙型肝炎(乙肝)流行特征。方法对丽水市1999-2008年报告的乙肝疫情资料,以发病率、构成比及三间分布(地区、时间、人群)情况进行统计分析。结果1999-2008年乙肝发病率均位居丽水市法定传染病首位,累积报告病例26953例,发病率在97.36/10万～131.42/10万之间,年均发病率109.78/10万,占甲、乙类传染病发病总数的33.08%;占病毒性肝炎总数的85.03%。1999-2003年乙肝发病率呈下降趋势,其后有所回升。发病无明显季节性,表现为全年散发;职业分布前3位为农民(58.48%)、工人(10.04%)、干部(7.67%);男性占73.34%,女性占26.66%,男女性别比为2.75:1;年龄分布以20～49岁组为主,占77.14%。结论乙肝是今后丽水市重点预防控制传染病之一,应采取综合性防治措施。

Objective To investigate the epidemiological features of hepatitis B in Lishui.Methods The data of hepatitis B reported from 1999 to 2008 in Lishui were analyzed in terms of incidence rate,constituent and region/time/population distributions.Results The incidence rate of hepatitis B from 1999 to 2008 ranked first among the notifiable infectious diseases in Lishui.A total of 26 953 cases were reported accumulatively with the incidence rates ranging from 97.36/lakh to 131.42/lakh,the average annual incidence rate was 109.78/lakh.The hepatitis B cases accounted for 33.08% of the total class A and B infectious disease cases and accounted for 85.03% of total viral hepatitis cases.The incidence rate once declined during 1999-2003,then increased again.No obvious seasonality was observed on the incidence,the disease occurred sporadically all the year round.The first 3 populations mostly affected were farmers（58.48%）,workers（10.04%）,institution staffs（7.67%）.The male cases accounted for 73.34% and the female cases accounted for 26.66%（gender ratio：2.75∶1）.Most cases occurred in the people aged 20-49 years old（77.14%）.Conclusion Hepatitis B is one of priority diseases to be prevented and controlled in Lishui,comprehensive prevention and control measures should be taken.