高州市一起学校乙型流感聚集性疫情的流行病学调查

Epidemiological investigation of the epidemic situation of influenza B in a school in Gaozhou

目的调查分析一起学校乙型流感聚集性疫隋的原因和特征,为学校流感疫隋的防控提供依据。方法对高州市某城区小学近期有多名学生出现高热、咳嗽等症状的疫情开展流行病学调查,对9名症状典型病例采集咽拭子标本进行病原学检测。结果该校先后有10名学生出现高热、咳嗽等流感样症状,集中分布于1幢教学楼一层的一个班级,9名病例的咽拭子样本有6例检出乙型流感病毒核酸阳性。结论这是一起由乙型流感病毒引起的学校聚集性疫情,发病原因与首发病例发病后仍旧回校上课,同班学生与其密切接触造成传播有关。早发现、早报告、早隔离和接种流感疫苗是控制流感疫情的重要措施。

Objective To investigate the causes and characteristics of the epidemic situation of influenza B in school, and provide the basis for the prevention and control of influenza. Methods An epidemiological investigation was car- ried out on the epidemic situation of fever, cough and other symptoms in a primary school in a city of Gaozhou. The pathogens were collected from 9 typical cases. Results The school has 10 students appear high fever, cough and other flu like symptoms, which is mainly distributed in the 1 teaching building a layer of a class, nine cases of pharyngeal swab samples are detected in 6 cases of influenza B virus nucleic acid positive. Conclusions It is caused by influenza B virus in a school aggregation epidemic, cause of disease and the first case after the onset Still back to school, class- mate and close contact with the propagation caused by related. Early detection, early reporting, early quarantine and vaccination are important measures to control the epidemic of influenza.