Abstract:

Objective To understand the epidemiological characteristics and epidemic situation of malaria in Yancheng
City，so as to provide the evidence for proposing the control strategy of malaria. Methods A retrospective investigation was em?
ployed. The epidemiological data of the definitely diagnosed malaria cases in Yancheng City from 2003 to 2011 were collected and
analyzed for the epidemiological characteristics and epidemic situation of malaria. Results A total of 134 malaria cases were de?
tected in 9 counties（cities，districts）of Yancheng City from 1993 to 2011，including 18 cases of local vivax malaria，59 cases of
imported vivax malaria，56 cases of imported falciparum malaria and 1 cases of imported malariae malaria，which comprised
13.43%，44.03%，41.79% and 0.75% of the total cases，respectively. From 1993 to 2011，the total incidence of malaria was 0.3
per million to 2.9 per million，and the incidence of local malaria ranged between 0 and 0.6 per million，appearing low epidemic sit?
uation. Since 2006，no local malaria cases were detected for 6 successive years. A total of 56 cases of oversea imported falciparum
malaria and 1 cases of imported malariae malaria were found from 2007 to 2011，and the number of imported falciparum malaria
cases exhibited an increasing tendency year by year. The median interval from onset to treatment for these patients was 1 day，
58.96% of the patients went to clinic when they felt silk and the village clinic was their major choice for the first visit. All of the me?
dian intervals from onset to blood test，to diagnosis and to treatment were 4 days. Conclusions The transmission of local malaria
tends to be gradually eliminated in Yancheng City，and the oversea imported falciparum malaria cases obviously increase. Current?
ly，the surveillance and control of imported malaria should be given a high priority.

Key words: Malaria；Epidemiological characteristics；Epidemic situation；Control strategy；Yancheng City

摘要：

目的掌握盐城市疟疾发病特征和流行态势，为疟疾防治决策提供科学依据。方法采用回顾性调查方法，收集1993-2011年全市疟疾确诊病例流行病学资料，分析疟疾病例发病的流行病学特征和流行态势。结果1993-2011年盐城市9个县（市、区）疟疾发病总人数为134例，其中本地间日疟18例，输入性间日疟59例，输入性恶性疟56例，输入性三日疟1例，分别占总病例数的13.43%、44.03%、41.79%和0.75%。19年全市疟疾总发病率为0.03/10万～0.29/10万，本地疟疾发病率为0～0.06/10万，呈低度流行态势，2006年以后全市未发现本地感染疟疾病例。2007-2011年发现境外输入性恶性疟病例56例，并呈逐年上升趋势，同时发现境外输入性三日疟1例。病人发病至就诊时间的间隔中位数为1 d，当天就诊的占58.96%，村卫生室为主要首诊医院，占44.06%；病人发病至血检、确诊和治疗时间间隔中位数均为4 d。结论盐城市本地疟疾发病已趋于逐步消除态势，境外输入性恶性疟明显增加，加强输入病例监测和防控是当前工作的重点。

关键词: 疟疾；流行特征；流行态势；防控对策；盐城市