Abstract:

Objective To investigate the prevalence of malaria at the National Malaria Monitoring Points (NMMPs) in Guangxi Zhuang Autonomous Region, China, and its determinant factors and to provide a basis for the development of preventive measures for malaria. Methods Information was collected at three NMMPs in Guangxi; the information included the blood test results of fever patients in local residents and mobile population, the immunological detection results for malaria among students at the monitoring points, the investigation of malaria vector Anopheles, and the use of mosquito nets, screened doors and windows, and insecticides among local residents. Results In 2010, there were 2348 person-times of blood tests at the three NMMPs among the fever patients in towns, with a blood test rate of 2.24% (2348/104 861); the blood test rates were 1.98% (2075/104 861) among local residents with fever and 0.26% (273/104 861) among the mobile population with fever. No malaria-positive cases were found. Anopheles sinensis was the dominant malaria vector species; the density ratios of An. sinensis were 99.94% outdoors and 100% indoors; the human-biting rate of An. sinensis was up to 49.75 mosquitoes/person·night in July. Conclusion The population density of malaria vector An. sinensis is still high. Strengthening malaria surveillance and management in the mobile population is the key to consolidating the prevention and control of malaria.

Key words: Malaria, Surveillance, Epidemic situation, Mosquito vector

摘要：

目的 了解广西壮族自治区(广西)全国疟疾监测点疟疾流行现状及其影响因素,为制定防治措施提供依据。方法 收集广西3个全国疟疾监测点资料,包括当地居民及流动人口发热患者血检数据及监测点学生疟疾免疫学检测资料,监测点传疟按蚊调查及当地居民蚊帐、纱门纱窗及杀虫剂的使用情况。结果 2010年广西3个全国疟疾监测点发热患者血检共2348人次,血检率为2.24%(2348/104 861),其中当地居民发热患者血检率为1.98%(2075/104 861),流动人口发热患者血检率为0.26%(273/104 861),均未检出疟原虫阳性者;中华按蚊为当地的主要媒介按蚊,室外诱捕中华按蚊密度占99.94%,室内中华按蚊密度为100%,7月中华按蚊叮人率最高为49.75只(/人·夜)。结论 传疟媒介中华按蚊种群密度依然较高,加强流动人口疟疾监测与管理是巩固防治成果的关键。

关键词: 疟疾, 监测, 疫情, 蚊媒