摘要
目的了解江门市某中学暴发的一起B型流感疫情的流行特征,为学校B型流感疫情的控制提供科学依据。方法使用流感个案调查表对流感疫情进行统计分析,用逆转录-聚合酶链反应(RT-PCR)检测患者咽拭子标本中的流感病毒核酸。结果疫情自2月20日至4月7日,历时48 d,有452名学生发病,罹患率为11.15%。采集2份现症病人咽拭子全部检测出B型流感病毒核酸阳性。16～17岁年龄组罹患率较高,男、女生罹患率差异有统计学意义(P<0.01)。疫情具有明显的班级和宿舍聚集性。病毒分离培养为B型流感病毒。结论此次疫情为B型流感病毒引起的流感暴发疫情。应加强学校流感监测工作和疫情网络建设。
Objective To study the epidemiological characters of an influenza B outbreak in a middle school in Jiangmen city and to provide effective and scientific measures of respiratory diseases prevention and control in schools. Methods The data from influenza case questionnaires were statistically analyzed. The specimens of throat swab of patients in acute phase were detected for RNA of influenza B by RT-PCR. Results There were 452 pupils being infected with influenza B virus from February 20 to A- pril 7, 2012 and the incidence rate was 11.15%. This epidemic situation lasted for 48 days. Two samples were collected and all of them were tested to B nucleus acid. The majority of the patients were 16-17 years old and there was significant difference in the in- cident rate between boys and girls. The incident rate had obvious correlation with classes and dormitories. There were no cases oc- eurred among teachers. The isolated virus was influenza virus type B. Conclusion The epidemic situation is caused by the out- break of influenza B virus. We should strengthen the influenza surveillance in school and the outbreak network construction.
出处
《中国学校卫生》
CAS
北大核心
2013年第5期567-569,共3页
Chinese Journal of School Health
