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目的分析洪雅县某中学流感暴发疫情的流行病学特征,为学校流感暴发防控提供参考。方法对洪雅县某中学流感暴发疫情的病例进行流行病学调查和分析。结果该校共发现流感病例151例,平均罹患率6.31%;其中高一年级发病75例,罹患率最高(11.19%),占总发病数的49.67%;住宿生发病126例,占总发病数的83.4%。病原学检测到此次流感暴发的毒株是甲型流感病毒,甲型H1N1流感病毒核酸阳性2例。结论该学校流感暴发疫情以住宿生为主,其中高一年级罹患率高于其他年级。
Objective To analyze the epidemiological characteristics of influenza outbreak in a middle school in Hongya County and provide references for the prevention and control of influenza in schools. Methods A case of influenza outbreak in a middle school in Hongya County was investigated and analyzed. Results A total of 151 cases of influenza were found in this school, with an average attack rate of 6.31%. Among them, 75 cases were found in the first grade and the highest rate was 11.19%, accounting for 49.67% Of 83.4%. The etiology detected that the strain of influenza outbreak was influenza A virus, and two were positive for influenza A (H1N1) virus. Conclusion The outbreak of influenza in this school is dominated by boarding students, among which the prevalence in the first grade is higher than that in other grades.