2009年河南省甲型H1N1流感大流行聚集性疫情分析

目的分析河南省2009年甲型H1N1流感大流行聚集性疫情的流行病学特点。方法对"中国流感监测信息系统"中报告的甲型H1N1流感聚集性疫情进行描述性流行病学分析。结果 2009年河南省共报告甲型H1N1流感聚集性疫情90起(发病1 230例,死亡2例),其中学校(包括幼托机构)报告聚集性疫情77起(占总起数的85.56%),以中学为主(40起,44.44%)。郑州市聚集性较多(40起,占44.44%)。报告高峰出现在2009年9月。结论河南省2009年甲型H1N1流感大流行聚集性疫情集中分布于7~11月份,流行高峰的起点明显早于季节性流感,且流行强度远超过季节性流感。在流感大流行年份需进一步加强学校重点场所的防控力度。

Epidemiological characteristics on the clustering nature of pandemic(HINl) 2009 in Henan Province

0bjective To study the epidemiological characteristics on the clustering nature of pandemic(HlNl) 2009 in Henan province.Methods Time and place distribution of pandemic(HlNl) 2009 on the nature of clustering through the data from national influenza surveillance net work were described.Results 90 pandemic(HlNl) 2009 clusters,a total of 1 230 cases(including 2 deaths) were reported in Henan province.The most reported number of clusters was from schools and kindergartens with the total number of 77(accounted for 85.56 % of the total number).Middle schools appeared have the most clusters(40,accounting for 44.44 %).The reported peak was in June,2009.Conclusion The pandemic(HlNl) 2009 clusters were reported in the time from June to December,2009 in Henan province.The beginning of winter peak was much earlier and intensity of reporting was much higher on the clusters of pandemic(HlNl) 2009 than that of seasonal influenza.Improving the treatment of schools was recommended strategy for the pandemic(HlNl) 2009 clusters control and prevention.