关键词: 登革热, 流行现状, 输入病例, 本地感染病例

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