中文摘要：

[目的]分析2009—2010年南通市甲型H1N1流感（甲流）的流行特征,为其防控提供依据。[方法]对中国疾病预防控制信息系统中2009—2010年南通市甲流个案信息和聚集性疫情进行描述性流行病学分析。[结果]2009年和2010年南通市甲流发病率分别为8.24/10万和1.03/10万。2009年崇川区发病率最高,其次为港闸区和开发区。病例主要集中在0-29岁年龄段,占发病总数的81.56%,学生病例占53.76%。疫情在2009年9月和12月形成2次流行高峰,2010年5月起无病例报告。2009年报告14起聚集性疫情,均发生在校园。[结论]0~29岁的儿童、青少年是甲流防控的重点人群。对人群易感状态进行持续监测,对病原体变异情况开展常规监测,实现甲流监测体系的高敏感性和高特异性,对进一步防控甲流有重要意义。

英文摘要：

[Objective] To investigate the epidemiological characteristics of Novel Influenza A/H1N1 in Nantong and to provide scientific evidence for its control and prevention. [Methods] The data were collected from Information System of Disease Control and Prevention in China.Descriptive epidemiological analysis was performed to explore the H1N1 case report and aggregation of epidemics in Nantong between 2009 and 2010. [Results] The reported incidence rate in 2009 and 2010 were 8.24 per 100,000 and 1.03 per 100,000,respectively.The incidence in Chongchuan district was higher than that in Gangzha district and development district.Cases were mainly concentrated in the 0-29 years old group,which accounted for 81.56% of the diagnosed cases of H1N1,and 53.76% cases were among students.Two epidemic peaks appeared at September and December in 2009,and no case was reported since May in 2010.There were 14 aggregation of the epidemics that broke out in schools in 2009. [Conclusion] The youths and the students in 0-29 years old group should be the focus population in H1N1 prevention.The continuous monitoring of susceptibility of population,routine surveillance on variation of virus and high sensitivity and specificity of the influenza surveillance system are of great significance in further prevention and control of H1N1.