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目的调查某乡镇小学一起乙型流感暴发疫情流行特征,为制定学校传染病暴发疫情预防控制措施提供依据。方法采用描述流行病学方法对瑞安市某乡镇小学学生乙型流感发病情况进行调查分析。结果某乡镇1 879名小学生中共发生44例乙型流感病例,罹患率2.34%,涉及3个班级,发病学生均未接种流感疫苗;采集10份新发病例咽拭子标本,乙型流感病毒核酸阳性率70.00%。经隔离传染源、晨检和健康教育等措施,疫情得到控制。结论加强晨检、隔离传染源和接种流感疫苗是预防控制流感暴发的重要措施。
Objective To investigate the epidemiological characteristics of influenza A outbreaks in a township primary school and provide basis for the prevention and control measures of outbreaks of infectious diseases in schools. Methods Epidemiological methods were used to investigate the incidence of influenza B among primary school students in a township of Ruian. Results A total of 449 cases of influenza B were found in 1 879 primary school students in a township, with an attack rate of 2.34% and involving 3 classes. None of the students were vaccinated. Throat swab samples of 10 newly diagnosed cases, The positive rate of 70.00%. After isolation of sources of infection, morning inspection and health education, the epidemic was under control. Conclusion Strengthening early screening, isolating the source of infection and vaccinating influenza are important measures to prevent and control flu outbreak.