2007-2011年云南省细菌性痢疾疫情监测结果分析

目的初步分析2007-2011年云南省细菌性痢疾流行特点,为制订细菌性痢疾防控策略提供参考。方法从中国疾病预防控制信息系统获取疫情资料,用Excel、mapinfo4.5和SAS9.2软件进行统计描述和检验。结果2007-2011年云南省累计报告菌痢37035例,年均报告菌痢7407例,年报告发病率在18.69/10万~14.72/10万,5年平均报告发病率低于全国平均水平;49.52%的病例集中分布在昆明、大理、红河和曲靖4个州(市),迪庆州5年平均发病率为80/10万,为全省最高。菌痢每年的发病高峰均出现在5月份,68.16%的病例分布在4-8月。病例以学龄前儿童、学生和农民为主,20岁以下人群男性发病多于女性,20岁及以上则女性多于男性,差异有统计学意义(P0.05)。2007-2011年全省累计报告菌痢暴发疫情4起。结论云南省2007-2011年菌痢疫情总体上相对平稳,人口聚集的滇中地区菌痢病例较多,滇西北地区病例较少但发病率较高,每年4-8月是高发季节,学生、幼儿和农民是高危人群,农村地区的学校和托幼机构等人口集聚地易发生暴发。

Surveillance of Bacillary Dysentery in Yunan Province, 2007 -2011

Objective To preliminarily analyze the epidemic features of bacillary dysentery in Yunnan province for formulating prevention and control strategies. Methods Epidemic data were collected from the information system of Chinese Center for Disease Control and Prevention, and were statistically analyzed with Excel, mapinfo 4. 5 and SAS9.2. Results The total number of bacillary dysentery reported in Yunan province during the period was 37 035, with the annual number of 7407; the annual incidence was 18.69 - 14. 72/105. The average annual incidence was lower than the national level. Cases mainly distributed in areas of Kun- ruing, Dali, Honghe and Qujing. Diqing had the highest incidence of 80/105. The incidence peaked in May, and 68. 16% of the cases concentrated in April to August. Preschool children, student and peasants were the vulnerable population. Incidence rate in male under 20 - year - old was higher than in female and rate in female over 20 - year ＂old was higher than in male （P 〈 0. 05 ）. Four bacillary dysentery outbreaks were reported within the province during the period. Conclusion In general, the epidemic situation of bacil- lary dysentery in Yunan province stays relatively stable; the peak season is from April to August of the year, and the incidence of the western and northern area is comparatively high; students, preschool children and peasants are the vulnerable population. The outbreaks can easily occur in the schools of rural area and kin- dergartens.