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目的探讨从化市首例甲型H1N1流感病例的发生过程,为制订防控措施提供依据。方法按照2009年卫生部《甲型H1N1流感流行病学调查和暴发疫情处理技术指南(试行)》的要求进行现场流行病学调查。结果病例潜伏期74h,体温37.5℃,无明显呼吸道症状;临床症状较轻;咽拭子样本检测,甲型H1N1流感病毒核酸阳性,确诊为甲型H1N1流感病例;未见续发二代病例。结论本事件为输入性二代病例引发本地感染甲型H1N1流感疫情,感染者在无防护的环境下,接触保留带有甲型H1N1流感病毒的被褥或尘埃后导致感染。
Objective To explore the occurrence of the first case of Influenza A (H1N1) in Conghua City, and provide the basis for the development of prevention and control measures. Methods According to the requirements of 2009 Ministry of Public Health “Technical Guidelines for Epidemiological Investigation and Outbreak Treatment of Influenza A H1N1 (Trial)”, an epidemiological investigation was conducted in the field. Results The incubation period was 74h and the body temperature was 37.5 ℃. There was no obvious respiratory symptoms. The clinical symptoms were mild. The throat swab samples were positive for the influenza A (H1N1) virus and were diagnosed as Influenza A (H1N1). No second-generation cases were found. Conclusions This incident led to the outbreak of imported Influenza A (H1N1) outbreaks in the second generation of imported patients. Infected persons were exposed to bedding or dust containing the Influenza A (H1N1) virus in an unprotected environment, causing infection.