西湖区某学校1起甲型H1N1流感暴发疫情调查

Investigation on the Outbreak of Influenza A H1N1 in a School of Xihu District of Nanchang

[目的]分析1起学校甲型H1N1流感暴发的特点和原因,为制定甲型H1N1流感预防控制措施提供依据。[方法]2009年9月18日,到现场进行流行病学调查。[结果]本起疫情历时7d,全校发生流感样病例15例,罹患率为1.35%;无重症和死亡病例;确诊甲型H1N1流感2例。首例确诊病例所在的初二(1)班(共35名学生)发病11例,罹患率为31.43%;男生罹患率为1.47%,女生罹患率为1.19%(P>0.05)。采集7份患者咽拭子,2份甲型H1N1流感核酸阳性。[结论]这是一起由甲型H1N1流感病毒引起的学校局部流感暴发疫情,暴发原因主要为疫情报告迟缓,晨检制度不落实,隔离措施不彻底。

[Objective]To analyze the characteristic and causes of influenza A H1N1 outbreak in a school,to provide the basis for the development of influenza A H1N1 influenza prevention and control measures.[Methods]On-the-spot epidemiological investigation was conducted on September 18 th in 2009.[Results]15 influenza-like cases were reported during the epidemic which lasted for 7 days.The morbidity rate was 1.35%.No severe and the death cases were reported.2 cases with Influenza A H1N1 were confirmed.The first confirmed case was in Junior second-grade （2）.There were 35 students in the class,and 11 of them were ill,accounting for 31.43%.It was 1.47% and 1.19% in male and female students（P〉0.05）.Throat swab samples were collected from 7 patients,2 of them were positive.[Conclusion]This was a local outbreak caused by type A H1N1 influenza virus in school.The main causes were delayed epidemic report,morning examine not into practice and no effective quarantine measures.