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目的分析潼关县流感疫情暴发的流行病学特征,为防控流感等呼吸系统传染病提供经验。方法对临床诊断病例进行个案调查,采集发病初期未用药患者的鼻、咽拭子进行实验室检测和病毒培养,对收集的资料和流行过程进行流行病学分析。结果潼关县2所中小学共发生流感样病例42例,罹患率为2.19%;经对15例发病初期未用药患者鼻、咽拭子标本进行检测,11份甲型流感病毒抗原呈阳性;RT-PCR检测,甲型流感病毒核酸呈阳性,阳性率为73.30%。结论此次流感暴发疫情的病原体为甲型流感病毒,提示2008年流感流行病原体很有可能将以甲型为主。
Objective To analyze the epidemiological characteristics of flu outbreak in Tongguan County and provide experience for prevention and control of respiratory system diseases such as flu. Methods The cases of clinical diagnosis were investigated by case study. Nasopharyngeal and throat swabs were collected from the patients who did not receive drugs at the initial stage of their illness for laboratory testing and virus culture. Epidemiological analysis was conducted on the collected data and epidemiological data. Results A total of 42 influenza-like illness cases were found in 2 primary and secondary schools in Tongguan County, with an attack rate of 2.19%. Nasopharyngeal and throat swab samples were obtained from 15 patients who did not receive drug during the initial stage of infection, and 11 were positive for influenza A virus. -PCR test, influenza A nucleic acid was positive, the positive rate was 73.30%. Conclusions The pathogen of the outbreak of the outbreak was influenza A virus, suggesting that the influenza A pathogens in 2008 are likely to be mainly type A.