2004-2010年我国流行性乙型脑炎发病及死亡的季节性分析

Seasonal distribution of morbidity and mortality of Japanese encephalitis in China from 2004 to 2010

目的分析2004-2010年全国范围内流行性乙型脑炎(乙脑)发病和死亡时间的季节性趋势。方法收集2004-2010年全国乙脑逐月发病和死亡资料,应用圆形分布法进行分析。结果全国乙脑发病和死亡时间存在明显的季节集中趋势(P<0.05),发病和死亡高峰日分别为8月11日和10日,高峰期为7月8日至9月13日和7月7日至9月14日。结论研究全国范围内乙脑的季节性流行特点,可为乙脑的防治工作提供科学依据。

Objective To determine the seasonal trends of the morbidity and mortality of Japanese encephalitis（JE） in China from 2004 to 2010. Methods Circular distribution analysis was conducted based on JE morbidity and mortality data in China from 2004 to 2010. Results Seasonal concentration of JE morbidity and mortality was observed（P0.05） . The highest morbidity was observed on August 11 and the highest mortality on August 10,with peak periods from July 8 to September 13 and July 7 to September 14. Conclusion This study provides insight for the seasonal characteristics of JE in China for disease prevention and control.