Abstract: Objective To analyze the epidemiological characteristics of malaria in Hechi City， Guangxi Zhuang Autonomous Region from 2005 to 2015， so as to provide the evidence for formulating and adjusting measures of malaria elimination. Methods The data of malaria cases in 11 counties of Hechi City from 2005 to 2015 were collected and analyzed by using Microsoft Office Excel 2003 and SPSS 17.0. Results A total of 160 malaria cases were reported in Hechi City from 2005 to 2015， and the annual average malaria incidence was 3.6 per million. There were 10 local recurrence cases （accounting for 6.25％， 10/160） and 150 imported cases （accounting for 93.75％，150/160）. For the etiology， Plasmodium vivax accounted for 51.87% （83/160） in these cases， P. falciparum accounted for 34.38%（55/160）， P. ovale accounted for 1.25%（2/160）， P. malariae accounted for 5.00%（8/160）， and the indeterminate accounted for 7.50% （12/160）. During the period of 11 years， the malaria incidence first dropped and then rose. There were no local cases after 2009. However， an imported falciparum malaria death case was reported in 2010， a severe imported falciparum malaria case was reported in 2013 and another in 2015. A severe case of maternal?neonatal vivax malaria was reported in 2014. These cases were mainly distributed in 10 counties of Hechi City， with more young male adults who engaged in digging mining. More cases concentrated from April to August. Most of the reported malaria cases were imported， 60.00% （96/160） of them returned from Africa and Southeast Asia， and 33.75%（54/160） from other domestic provinces. The median of the interval from symptom appearance to diagnosis was 5 d， and there was a significant difference among the above years （c2 = 33.40， P＜0.05）. Conclusions Malaria is still an important public health problem in Hechi City， and the appropriate control measures and effective tools should be strengthened for malaria elimination. The key to consolidate the achievements of malaria control is strengthening the malaria monitoring management of the floating population.

Key words: Malaria； Epidemiological characteristic； Analysis； Floating population； Hechi City

摘要： 目的 分析2005-2015年广西壮族自治区河池市疟疾流行特征，为进一步调整和制订该市消除疟疾措施提供科学依据。方法 收集2005-2015年河池市11个市、县、区疟疾疫情资料，采用Microsoft Excel 2003和SPSS 17.0软件对数据进行统计和分析。结果 2005-2015年河池市共报告疟疾病例160例，年均发病率为0.36/10万，其中本地感染病例占6.25%（10/160），输入性疟疾病例占93.75%（150/160）。4种疟原虫均有发现，以间日疟为主，占51.87%（83/160）；恶性疟次之，占34.38%（55/160）；三日疟和卵形疟分别占5.00%（8/160）、1.25%（2/160）；未分型报告12例，占7.50%。11年间疟疾发病率先降后升，2009年后再无本地疟疾病例报告；2010年报告1例输入性恶性疟死亡病例；2013年和2015年各出现1例恶性疟重症病例；2014年出现1例胎传新生儿间日疟重症病例。全部病例分布于10个市、县、区，以青壮年男性为主，以挖矿职业为主；疟疾发病主要集中在4-8月份；感染自非洲和东南亚者占60.00%（96/160），自国内其他省者占33.75%（54/160）。患者发病到确诊治疗时间中位数为5 d，不同年份疟疾病例的发病至诊断治疗时间差异有统计学意义（c2 = 33.40，P < 0.05）。结论 河池市疟疾疫情仍面临很多挑战，消除疟疾各项工作仍需加强；加强流动人口的疟疾监测管理是巩固疟疾防治成果的关键。

关键词: 疟疾；流行特征；分析；流动人口；河池市