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目的调查分析1起流感疫情暴发的流行病学特征,为流感疫情的防控提供科学依据。方法通过流行病学调查,结合临床症状和实验室检测结果进行综合分析。结果该起流感暴发共报告发病学生407例,罹患率48.39%。没有明显的性别、年龄差异,具有明显的聚集性。所有患病学生均有发热,体温在37.5℃~39.9℃之间,咳嗽(84.03%),乏力(66.83%),咽痛(62.16%),头痛(58.72%)。对8名症状典型的病例采集咽拭子,送省疾控中心进行流感快速诊断试剂检测,4份样品检出乙型流感病毒抗原阳性。结论此次流感暴发疫情是由乙型流感病毒引起的,应加强学校流感的预防控制工作,加强村级疫情网建设。
Objective To investigate and analyze the epidemiological characteristics of a flu outbreak and provide a scientific basis for the prevention and control of flu outbreak. Methods Through epidemiological investigation, combined with clinical symptoms and laboratory test results for a comprehensive analysis. Results The influenza outbreak reported a total of 407 students with onset, the attack rate of 48.39%. No obvious gender, age difference, with obvious aggregation. All the sick students had fever, body temperature 37.5 ℃ ~ 39.9 ℃, cough (84.03%), fatigue (66.83%), sore throat (62.16%), headache (58.72%). Throat swabs were collected from eight typical cases of symptoms, sent to the provincial CDC for rapid diagnostic test for influenza, and four samples were positive for type B influenza antigen. Conclusion The influenza outbreak was caused by influenza B virus. Schools should strengthen the prevention and control of influenza in schools and strengthen the construction of village-level epidemic networks.