1起发生在学校的甲型H1N1流感暴发的调查

Investigation on the Outbreak of Type A H1N1 Influenza in a School

[目的]了解疫情性质及发生的原因,以便采取控制措施,为今后类似疾病的预防与控制提供经验。[方法]对2009年10月27日至11月8日发生在宁强县一初级中学的发热疾病暴发疫情进行调查处理。[结果]全校师生中临床诊断甲型H1N1流感病人82例,均为学生,发病率为8.26%。其中2009年10月27日发病1例、28日1例、29日17例,11月2日1例、4日2例、5日27例、6日21例,7日12例。首例所在的初一(1)班发病率为44.44%,为发病率最高的班。检测20例发热学生的咽拭子,14例甲型H1N1流感病毒核酸阳性。[结论]这是一起甲型H1N1流感暴发疫情。

[Objective]To understand the epidemic characteristic and causes of type A H1N1 influenza,to take effective measures,to provide experience for disease prevention and control. [Methods]lnvestigation was carried out on the outbreak of fever in Junior High School from October 27 to November 8 2009 in Ningqiang county. [Results]82 students with type A H1N1 influenza were confirmed, accounting for 8.26%. 1, 1 and 17 cases were reported on October 27,29 and 29 in 2009 respectively while 1,2,27,21 and 12 cases were reported on November 2,4,5,6 and 7 respectively. The morbidity was 44. 44% in class 1 of grade 1 where the first case was diagnosed. Throat swab samples were tested for 20 students, 14 of them were influenza A H1N1 influenza virus nucleic acid positive. [Conclusion]This was the outbreak of type A H1N1 influenza.