论文部分内容阅读
目的对2009—2012年广东口岸输入性流感病例的流行病学特征进行分析,为出入境口岸流感的监测及其防控工作提供依据。方法采集广东25个口岸有发热症状的入境人员的鼻咽拭子,采用实时荧光RT-PCR法对样本进行流感病毒的检测及分型,通过Excel、SPSS18.0对不同型别的流感阳性病例的流行情况进行统计分析。结果 2009—2012年广东口岸共发现5 723名发热病例,其中985例为输入性流感病例,检出率为17.21%。共呈现5个流行高峰,分别为2009年6-8月,以季节性甲型流感为主;2009年10-12月,以甲型H1N1流感(2009)为主;2010年7-9月,以季节性甲型流感为主;2010年12月-2011年2月,以甲型H1N1流感(2009)为主;2011年12月-2012年2月,以季节性乙型流感为主。甲型H1N1流感(2009)在19岁以下人群检出率较高,季节性甲型流感以50岁以上人群检出率最高,季节性乙型流感则以19岁以下及50岁以上人群检出率较高。结论 2009年5月至2012年2月期间,广东口岸入境流感病例中同时有甲型H1N1流感(2009)、季节性甲型流感以及季节性乙型流感的流行,并呈现相互交替的流行特征。不同流感类型在各年龄层分布不同,与性别无关。
Objective To analyze the epidemiological characteristics of imported influenza from 2009 to 2012 in Guangdong port and provide the basis for the surveillance and prevention and control of influenza at exit-exit ports. Methods Nasopharyngeal swabs were collected from 25 porting patients with fever in Guangdong Province. Real-time fluorescent RT-PCR was used to detect and classify the samples. Influenza positive samples of different types were collected by Excel and SPSS18.0 The prevalence of statistical analysis. Results A total of 5 723 cases of fever were found in Guangdong port from 2009 to 2012, of which 985 cases were imported influenza. The detection rate was 17.21%. A total of five epidemic peaks were presented, which were mainly seasonal influenza A from June to August in 2009; Influenza A (H1N1) influenza (2009) mainly from October to December 2009; from July to September 2010, Mainly seasonal influenza A; December 2010-February 2011, mainly Influenza A (H1N1) (2009); December 2011-February 2012, with seasonal influenza B mainly. Influenza A (H1N1) (2009) has a higher detection rate among people under 19 years of age, seasonal influenza A has the highest detection rate among people over 50 years of age, and seasonal influenza B has been detected among those under 19 years of age and over 50 years of age Higher rate. Conclusions From May 2009 to February 2012, the prevalence of Influenza A (H1N1), seasonal influenza A and seasonal influenza B in both entry-port influenza cases at the port of Guangdong and at the same time showed the characteristics of alternating epidemic. Different types of influenza are distributed in all ages and have nothing to do with gender.