摘要
目的分析一起甲型H1N1流感爆发疫情的原因和特点。方法对疫情进行描述性统计分析,探讨本次爆发的流行因素。结果这是一起甲型H1N1流感爆发疫情,8月22日至29日该厂共发生病例69例,总罹患率为10.5%,年龄18～30岁,平均21岁,男女比例为1:1.02,男女罹患率差异无统计学意义,病例宿舍分布较分散,住宿员工和外租员工罹患率差异无统计学意义。白班人群罹患率为15.6%,晚班人群罹患率为4.7%,白班人群发病率明显高于夜班人群,差异具有统计学意义。病例主要集中在白班冲压课,罹患率为26.2%,而白班清洗课罹患率仅为7.6%,两者差异有统计学意义。晚班冲压课和清洗课罹患率差异无统计学意义。冲压1线、冲压5线白班的发病率较高,分别为27.6%和26.3%,冲压线白班的病例有明显的空间聚集性。经实验室检测有4份甲型H1N1流感阳性。结论本次爆发最重要的传播途径是近距离的飞沫传播以及通过流水线的接触传播,采取以隔离传染源为核心的综合措施,对彻底控制疫情起到了决定性作用。
Objective Investigation was conducted to analyze the risk factors of an outbreak of H1N1 influenza and analyze the epidemiological characteristics of the outbreak.Method The data from questionnaires were statistically analyzed.Results An outbreak of H1N1 influenza between 22nd and 29th was noted.A total of 69 cases,with the overall attack rate of 10.5%,were analyzed.The infected patients were aged 18～30 years and the average was 21-years-olds.The male to female ratio was 1：1.02.The outbreak was scattered.The attack rate of the day-shift crowd was 15.6% and the night-shift crowd was 4.7%,and the difference was significant.Cases concentrated in the white board stamping class,the attack rate was 26.2%,while the attack rate of day shift washing was only 7.6%.There was statistical significance between the differences,and with no statistical significance between the attack rate of night shift stamping class and washing class.The incidence in the line one of stamping was higher than that in the line five of stamping,were 27.6% and 26.3%,day shift stamping has obvious spatial clustering.Four samples were found positive for H1N1 influenza.Conclusion The mode of transmission was through the contact with infectious droplets and the infection was acquired in the production lines.Isolation of the source of infection is an effective measure to control the outbreak.
出处
《热带医学杂志》
CAS
2011年第1期99-101,共3页
Journal of Tropical Medicine
