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目的分析大理市某小学1起流行性感冒暴发疫情的原因,为学校流行性感冒的预防控制工作提供参考。方法进行现场流行病学调查、卫生学调查,采集部分典型患者的咽拭子进行流感病毒核酸检测。结果该校各个班级均有病例,累计发病121例,罹患率47.27%。用PCR法对5例患者的咽拭子进行流感病毒核酸检测,其中2例结果显示为B型流感病毒核酸阳性。结论证实此次为1起以教师为传染源由乙型流行性感冒病毒引起的流感暴发疫情。提示应加强学校日常卫生管理工作、卫生知识的宣传工作和提高人群流感疫苗的接种率。
Objective To analyze the causes of an outbreak of influenza in a primary school in Dali, and to provide reference for the prevention and control of influenza in schools. Methods Epidemiological investigation and hygiene investigation were conducted in this study. Throat swabs from some typical patients were collected for influenza virus nucleic acid detection. Results All classes in the school have cases, cumulative incidence of 121 cases, the attack rate of 47.27%. Five patients with throat swabs were tested for influenza virus nucleic acid using PCR, and two of the results showed positive for influenza B virus. Conclusions confirmed that this time as a teacher-originated Influenza B virus outbreak caused by influenza. It is suggested that we should strengthen the routine health management in school, publicize the health knowledge and increase the vaccination rate of the crowd flu vaccine.