Abstract:

Objective To analyze the dengue fever epidemic situation in Yunnan province from 2004 to 2008 to provide the basis for developing prevention and control measures. Methods Statistical data from the network direct report system and information of individual case reporting cards and field investigation on dengue fever from 2004 to 2008 were collected and descriptively analyzed using Excel 2007 and ArcView GIS 3.3. Results A total of 116 cases of dengue fever were reported in Yunnan province from 2004 to 2008. Case reports were seen in every month except February and mainly concentrated in from August to November, which peaked in September and October. Among them, 104 cases were imported from Southeast Asian countries including mainly Myanmar and Laos; and 12 cases were local infections. Reports of patients seeking medical treatment came from 10 first-line border counties, and 4 non-border counties (including cities and districts). A certain number of patients were from the province, outside the province or a foreign country. Male patients were more than female ones. The disease affected every age group under the age of 70, while the major victims were at the ages of 0-9, 15-29, 35-39 and 50-54, accounting for 72.41% (84/116). Occupational distribution showed a concentration of cases in business service providers, farmers, students, laborers, scattered children, cadres and migrant workers. Conclusion Most dengue fever patients in Yunnan were imported cases or local cases induced by imported ones. The China-Myanmar and China-Laos border regions are the focal area for dengue prevention and control. The male group, business service providers, farmers, students, workers and scattered children are the high-risk group of infection, and shall be given importance in the prevention and control.

Key words: Dengue fever, Epidemic situation, Imported cases, Local infections

摘要：

目的 分析云南省2004－2008年登革热流行态势，为制定预防控制措施提供参考依据。方法 收集2004－2008年网络直报系统登革热疫情统计数据、卡片个案及现场调查等信息，用ArcView GIS 3.3及Excel 2007软件对2004－2008年登革热流行形式进行分析和描述。结果 2004－2008年云南省共报告登革热病例116例，除2月外各月均有病例报告，病例主要集中在8－11月，以9－10月最多。104例为来自缅甸、老挝为主的东南亚各国的输入病例，12例为本地感染病例。就诊属地县(市、区)涉及10个一线边境县(市、区)及4个非边境县(市、区)。本省、外省、外籍各类人群均有一定数量的病例报告。男性病例多于女性；70岁以下各年龄组均有发病，但发病数以0～9、15～29、35～39及50～54岁年龄组居多，占72.41%(84/116)；职业分布以商业服务者、农民、学生、工人、散居儿童、干部职员和民工为主。结论 云南省登革热主要为输入或输入引起本地传播的病例，我国与缅甸、老挝接壤的边境地区是登革热预防控制的重点地带，男性、商业服务者、农民、学生、工人和散居儿童是感染该病高风险人群和重点防控对象。

关键词: 登革热, 流行现状, 输入病例, 本地感染病例