关键词: 登革热, 监测, 布雷图指数

Abstract:

Objective To provide the basis for the prediction, early warning and development of control strategies of dengue epidemic by analyzing the dengue surveillance data in three national surveillance spots in Guangxi from 2005 to 2008. Methods Descriptive epidemiological analysis was conduced based on the dengue fever data reported through the China Information System for Disease Control and Prevention and the surveillance results of designated spots from 2005 to 2008. Results From 2005 to 2008, two imported cases of dengue fever were reported in Guangxi while no case observed in the three national surveillance spots. The predominant species of vector was Aedes albopictus, though no Ae. aegypti were detected. The breteau index(BI) was above 5, the security level, in all surveillance spots most of the year, particularly in Fangchenggang and Qinzhou city, where the indices stayed above 20 most of the time. The Aedes larval density peaked from June to August, with temporary containers being the major positive culprits. Neither dengue virus nucleic acids, nor viral isolates, were detected from 1208 Ae. albopictus. Conclusion With the presence of dengue-carrying vectors, Guangxi has faced potential risks of dengue epidemic. Therefore, the surveillance system and public health education should be strengthened to curb the BI under 20.

Key words: Dengue fever, Surveillance, Breteau index