Abstract: Objective To understand the situation and epidemic characteristics of imported falciparum malaria in Huai’an City from 2010 to 2016， so as to provide the evidence for formulating the prevention and control strategies of imported falciparum malaria in the city. Methods The epidemic data of imported falciparum malaria in Huai’an City from 2010 to 2016 were analyzed by using the descriptive epidemiological method. Results A total of 308 malaria cases were reported in Huai’an City from 2010 to 2016 with the average annual incidence of 0.88/105. A total of 240 imported falciparum malaria cases were reported， of which 18 cases （7.50%） developed into severe illness， and 2 severe patients died. The cases were reported in every county （district）， and the incidence rates of Qingpu District and Huai’an District were higher than the city average level. The cases occurred every month， so there was no significant seasonal variation in the reporting time of the cases. Most of the patients were young men and aged 30-49 years. The occupational distribution revealed that the patients were mainly farmers， workers and migrant workers. The main source of infection was from African countries. The median interval from symptom appearing to definite diagnosis was 1 day， and the longest interval was 236 days. Twenty?nine cases were diagnosed within 24 hours， accounting for 12.08%. Conclusions The epidemic situation of imported falciparum malaria in Huai’an City is grim. In order to consolidate the achievements of malaria eradication， it is necessary to further improve the multi?sectoral cooperation mechanism， strengthen the management of floating population and take effective measures to reduce the risk of imported falciparum malaria.

Key words: Imported falciparum malaria； Epidemic characteristic； Floating population； Huai’an City

摘要： 目的 分析淮安市输入性恶性疟现状与流行特征，为该市制定输入性恶性疟防控策略提供依据。方法 采用描述流行病学方法对2010-2016年淮安市输入性恶性疟疫情资料进行统计分析。结果 2010-2016年淮安市共报告疟疾病例308例，年均发病率为0.88/10万，其中输入性恶性疟240例，18例（7.50%）发展成重症病例，2例重症病例死亡。各县（区）均有发病，发病率高于全市平均水平的有清浦和淮安2个区。全年各月均有发病，无明显季节特征。人群分布以30～49岁之间青壮年男性的病例数最多，占77.92%。职业以农民、民工和工人为主。感染均来源于非洲国家。患者自发病到确诊时间的中位数为1 d，最长为236 d，24 h内被确诊的有29例，占12.08%。 结论 淮安市输入性恶性疟疫情严峻，为巩固消除疟疾成果，需进一步完善多部门合作机制，加强对流动人口的管理与监测，采取有效措施降低输入性恶性疟的危害。

关键词: 输入性恶性疟；流行特征；流动人口；淮安市