Abstract:

Objective To understand the species, density and seasonal variation of malaria vectors in Jiangsu Province, so as to provide scientific evidence for malaria control. Methods From 2005 to 2009, 5 towns in Jiangsu Province were selected as surveillance sites, and the species of malaria vectors and their density and seasonal variation were studied by the outdoor and indoor trapping methods. The data of malaria cases were analyzed by the circular distribution method. Results Only Anopheles sinensis was captured in the 5 surveillance sites from 2005 to 2009, and its density peak was mainly appeared in the first half of July. The peak incidence of malaria was on 16th August, the distribution of cases was accordant with the seasonal variation of vectors. Conclusion The surveillance and control of vectors should still be strengthened in the malaria control, so as to prevent the epidemic from rebounding as the increase of the density of Anopheles sinensis.

Key words: Malaria, Vector, Surveillance, Anopheles sinensis, Seasonal variation

摘要：

目的 了解江苏省传疟媒介的种类、密度和季节变化，为控制疟疾流行提供科学依据。方法 2005－2009年，选择江苏省5个镇作为疟疾媒介监测点，采用夜间室外半通宵帐内人饵诱捕法和清晨蚊帐内（室内）搜捕法进行种群和季节变化调查。利用圆形分布法对5年逐月疟疾发病数据进行分析。结果 2005－2009年，江苏省5个疟疾媒介监测点仅捕获中华按蚊，中华按蚊密度高峰出现在7月上半月。疟疾发病高峰日出现于8月16日，疟疾病例分布与媒介的季节消长情况相吻合。结论 疟疾防治中仍应继续加强媒介的监测与控制，警惕因中华按蚊密度升高而致疟疾疫情回升。

关键词: 疟疾, 媒介, 监测, 中华按蚊, 季节消长