一起学校甲型H1N1流感疫情暴发的调查

目的探索学校甲型H1N1流感疫情的暴发流行病学特征及其规律，为制定甲型H1N1流感防控措施提供科学依据。方法采用现场流行病学调查方法对保山市昌宁县某中学甲型H1N1流感暴发疫情进行调查；采集病人鼻咽拭子标本，采用real—timeRT—PCR方法进行甲型H1N1流感病毒核酸检测；对病人进行隔离治疗、对密切接触者给予医学观察、加强疫情监测。结果共发生流感样病例50例，罹患率2．41％，随机抽取的5例流感样病例甲型H1N1流感病毒核酸实验室检测呈阳性。结论本起疫情为甲型H1N1流感暴发，尽早发现与报告传染源、及时隔离和治疗病人、积极开展健康教育和保护易感人群可有效控制疫情暴发流行。

Investigation on an outbreak of influenza A HIN1 in schools

Objective To explore the epidemical characteristics and regulation of influenza A （H1N1） outbroke in school, so as to provide scientific basis for formulating prevention and control measures of the influenza A （ H1 N1 ） . Methods The field epidemiological investigation was carried out on influenza A H1 N1 outbroke in a middle school of Changning County. H1N1 influenza virus was tested with nucleic acid by collecting patient nasopharyngeal swab specimens and using real -time RT -PCR method. Patients were isolated and treated. Close contacts were observed and epidemic survillance was strengthened. Results There were totally 50 cases of influenza -like illness and the attack rate was 2.41%. The influenza A H1N1 virus was positive by nucleic acid laboratory test of 5 cases which were randomly selected. Conclusions It was an outbreak of HIN1 influen- za. Early detecting and reporting of the source of infection, timely isolation and treatment of patients, and ac- tively carrying out health education and protection of vulnerable populations are effective messures of control the epidemic outbreak.