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目的了解攀枝花市细菌性痢疾发生的高峰日及高峰期,掌握发病动态,提前做好监测,采取预防控制措施。方法采用圆形分布法对攀枝花市2005-2013年细菌性痢疾的季节分布特征进行分析。结果攀枝花市细菌性痢疾全年均有发病,5~6月份达高峰,11~12月份最低;2005-2013年细菌性痢疾发病逐年下降(趋势χ2=4 602.51,P<0.01);发病存在明显的高峰日和高峰期(P<0.01),总高峰日在6月23日,总高峰期为3月12日~10月3日,各年发病高峰日不相同或不全相同(F=44.67,P<0.01)。结论攀枝花市细菌性痢疾发病有明显的季节性分布特征,3~10月为该病的流行高峰期;总体发病逐年下降,季节性有提前趋势,建议应根据其流行特点的变化适时采取和调整防控策略。
OBJECTIVE To understand the peak days and peak periods of bacterial dysentery in Panzhihua City, to master the incidence of the disease, to monitor well in advance and to take preventive and control measures. Methods The circular distribution method was used to analyze the seasonal distribution of bacterial dysentery in Panzhihua City from 2005 to 2013. Results Bacillary dysentery occurred in Panzhihua City from May to June and reached its peak from May to June, with the lowest in November and December. The incidence of bacterial dysentery decreased year by year (trend χ2 = 4 602.51, P <0.01) from 2005 to 2013; the incidence was significant (P <0.01). The total peak day was on June 23, and the total peak period was March 12 to October 3, with the same or different peak on each peak (F = 44.67, P <0.01). Conclusions The incidence of bacillary dysentery in Panzhihua City is obviously seasonal distribution, from March to October is the peak of the epidemic. The overall incidence declines year by year and the seasonality has the trend of advance. The suggestion should be taken and adjusted timely according to the change of its epidemic characteristics Prevention and control strategy.