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目的分析山东省2009年9月1日-9月9日3起学校甲型H1N1流感暴发疫情的流行病学特征,为防控工作提供科学依据。方法采用流行病学调查方法调查确诊病例的流行病学史、临床表现等,调查资料实时录入甲型H1N1流感信息管理系统;应用Excel建立数据库,采用SAS软件进行统计分析。结果3起暴发疫情累计确诊甲型H1N1流感病例85例,3起暴发疫情的罹患率分别为A大学0.99%、B中学6.29%、C中学0.62%,3起疫情罹患率间差异有统计学意义(χ2=95.54,P<0.001)。C中学发现病例即采取全校停课措施,严格分类管理病例,使C中学暴发流行周期最短。结论3起甲型H1N1流感暴发疫情均发生在学校,学校是控制甲型H1N1流感疫情的关键,应高度关注学校甲型H1N1流感防控措施。
Objective To analyze the epidemiological characteristics of Influenza A (H1N1) outbreaks in three schools from September 1 to September 9, 2009 in Shandong Province, and provide a scientific basis for prevention and control. Methods Epidemiological investigation was used to investigate the epidemiological history and clinical manifestations of the confirmed cases. The survey data were entered into the Influenza A H1N1 Influenza Information Management System in real time. The database was set up by Excel and the SAS software was used for statistical analysis. Results A total of 85 outbreaks of Influenza A (H1N1) were confirmed in the three outbreaks. The outbreak rates of the three outbreaks were A University 0.99%, B Middle School 6.29% and C Middle School 0.62%, respectively. There were significant differences among the three outbreaks (χ2 = 95.54, P <0.001). C secondary school found cases that take the whole school suspension measures, strict management of cases, so that the C outbreak cycle of the shortest. Conclusions The three outbreaks of influenza A (H1N1) in schools and schools are the key to control the outbreak of influenza A (H1N1). Therefore, we should pay close attention to the prevention and control measures of influenza A (H1N1) in schools.