Chen Ling, Xu Huilan, Wu Gongping, Huang Zhiqiang
School of Public Health, Central South University, Changsha,China.
Zhong Nan Da Xue Xue Bao Yi Xue Ban. 2012 Feb;37(2):126-30. doi: 10.3969/j.issn.1672-7347.2012.02.002.
To explore the incidence, mortality, trends and time distribution of food poisoning in Hunan Province.
The data on food poisoning was derived from the Information Office of Hunan Provincial Health Department. Using the trend-test and circular distribution methods, we have described the current situation of food poisoning and tested the central tendency of the peak time points and the peak time zone of food poisoning in Hunan from 2000 to 2009.
On average, the incidence of food poisoning in Hunan from 2000 to 2009 was 0.072 per 100000 population. And the average number of people affected in these incidents was 1.937 per 100000 population. There were no apparent trends in either the number of incidents or people affected between 2000 and 2009 (u=-0.98, P>0.05; u=-1.34, P>0.05, respectively). The average mortality was 0.015 per 100000 population. The trend-test indicated that the average annual mortality decreased significantly from 2000 to 2009 (u=-1.72, P<0.05). Meanwhile the average annual fatality rate was 0.77%. The trend-test revealed statistically significant differences for the average annual fatality rate (u=-1.88, P<0.05). The circular distribution analysis showed that there was a central tendency of the distribution of food poisoning cases, with the average peak time at August 28th and the average peak time zone from June 7th to November 18th for food poisoning from 2000 to 2008.
From 2000 to 2009, there is a significant tendency in the average annual mortality and fatality rate of food poisoning in Hunan. Summer and fall are the high seasons for food poisoning. We should pay attention to the peak time zone, especially the peak time point of food poisoning for food safety monitoring, and strengthen the prevention and control on food poisoning.
探讨湖南省食物中毒的发病率、死亡率、流行趋势及时间分布特征。
食物中毒数据来源于湖南省卫生厅信息办公室。采用趋势检验和圆形分布法，描述食物中毒的现状，检验2000 - 2009年湖南省食物中毒发病高峰时间点及高峰时段的集中趋势。
2000 - 2009年湖南省食物中毒平均发病率为十万分之0.072，平均发病人数为十万分之1.937。2000 - 2009年食物中毒事件数和发病人数均无明显变化趋势（u = -0.98，P>0.05；u = -1.34，P>0.05）。平均死亡率为十万分之0.015，趋势检验显示2000 - 2009年平均年死亡率呈显著下降趋势（u = -1.72，P<0.05）。平均年病死率为0.77%，趋势检验显示平均年病死率差异有统计学意义（u = -1.88，P<0.05）。圆形分布分析显示，2000 - 2008年食物中毒病例分布具有集中趋势，平均发病高峰时间为8月28日，高峰时段为6月7日至11月18日。
2000 - 2009年湖南省食物中毒平均年死亡率和病死率呈显著变化趋势。夏秋季是食物中毒高发季节，应注意食物中毒的高峰时段，尤其是高峰时间点，加强食品安全监测，做好食物中毒防控工作。
