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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 and analyze the causes and characteristics of a school-acquired B flu epidemic in school, and provide the basis for prevention and control of school flu epidemic. Methods A series of epidemiological investigations were conducted in the recent primary school of a certain city in Gaozhou. The etiology of fever, cough and other symptoms were investigated. Throat swab specimens were collected from 9 typical cases for etiological detection. Results There were 10 students with flu-like symptoms of fever, cough and so on. They were concentrated in a classroom on the first floor of a teaching building. Six of the nine throat swab samples were positive for influenza B virus. Conclusions This is a school-based epidemic caused by influenza B virus. The cause of the disease is still related to the transmission of the first-case cases back to school and close contact with their classmates. Early detection, early reporting, early isolation and vaccination of influenza vaccine is an important measure to control the outbreak of influenza.