Objective To understand the imported malaria epidemic situation and characteristics in Shenyang City from 2009 to 2018, so as to provide the scientific evidence for developing malaria control interventions.
Methods The data of imported malaria cases in Shenyang City from 2009 to 2018 were collected and analyzed by using descriptive epidemiological methods.
Results A total of 177 malaria cases were reported in Shenyang City from 2009 to 2018, and all of them were imported. There were 157 laboratory confirmed cases(88.70%), included 123 cases of falciparum malaria(69.49%),20 cases of vivax malaria(11.30%),1 case of ovale malaria(0.56%)and 13(7.34%)unclassified cases. Four cases died of falciparum malaria with a case fatality rate of 2.26%. Among them, 174 were imported from Africa, accounting for 98.31% and 3 were imported from Southeast Asia, accounting for 1.69%. The age distribution was mainly between 21 and 50 years old, accounting for 80.79% of the total cases. The male to female ratio was 9.41:1. Their main occupations were migrant workers.
Conclusions Shenyang has no local malaria cases from 2008 to 2019. But the imported malaria epidemic situation is on the rise. We should strengthen the malaria prevention and control to avoid local secondary transmission.
摘要： 目的 了解沈阳市2009—2018年输入性疟疾疫情流行病学特征, 为制定合理有效的防制措施提供科学依据。 方法 采用描述性流行病学方法对沈阳市2009—2018年输入性疟疾监测资料进行统计学分析。 结果 沈阳市2009—2018年共报告177例疟疾病例, 均为输入性病例, 实验室确诊病例157例 (占88.70%), 其中恶性疟123例 (占69.49%) 、间日疟20例 (占11.30%) 、卵形疟1例 (占0.56%) 、未分型13例 (占7.34%) 。死亡4例, 均为恶性疟, 病死率为2.26%。感染来源地主要集中在非洲 (98.31%) 和东南亚 (1.69%) 。年龄分布主要在21~50岁, 占病例总数的80.79%。男女比为9.41∶1。职业以外出务工为主。 结论 沈阳市2009—2018年无本地感染疟疾病例发生, 但输入性疟疾病例有所增加, 应进一步加强对输入性疟疾的防控, 避免引起本地继发传播。