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[目的]了解广州市某区2009年甲型H1N1流感的流行病学特征,为防控提供依据。[方法]从中国疾病预防控制系统下载某区上报的甲型H1N1流感确诊病例的相关信息,用SPSS软件进行统计分析。[结果]2009年5月29日～12月31日,共报告315例甲型H1N1流感确诊病例,4例死亡,病死率为1.3%;病例主要分布在10～49岁的儿童和青壮年;职业以学生为主;平均每周发病10例,并出现3个发病高峰;大多数病例临床症状温和,50岁及以上年龄段病死率较高;所有死亡病例均患有基础疾病。[结论]甲型H1N1流感出现小范围聚集性疫情的危险依然存在,重点关注学生、年老体弱者、婴幼儿、孕妇等特殊人群及抵抗力差合并有其他慢性或先天性疾病者。
[Objective] To understand the epidemiological characteristics of Influenza A (H1N1) in a district of Guangzhou City in 2009 and provide basis for prevention and control. [Methods] The related information of confirmed cases of Influenza A (H1N1) from a certain area was downloaded from China’s disease prevention and control system and analyzed by SPSS software. [Results] A total of 315 confirmed cases of Influenza A (H1N1) were reported from May 29 to December 31, 2009 with 4 deaths and a case fatality rate of 1.3%. Cases were mainly found in children and young adults aged 10 to 49 years. Occupational students mainly; average weekly incidence of 10 cases, and the peak incidence of 3; clinical symptoms in most cases mild, 50 years of age and above mortality is higher; all deaths are suffering from underlying diseases. [Conclusion] The risk of small-scale conglomerate epidemic of H1N1 influenza still exists. The focus is on the special population such as students, infirm, infants, pregnant women and other people with poor resistance combined with other chronic or congenital diseases.