2014—2016年河南省赤道几内亚输入性疟疾病例流行病学特征分析

Epidemiological characteristics of malaria cases imported from Equatorial Guinea in Henan province,2014-2016

目的分析河南省2014—2016年赤道几内亚输入性疟疾病例的流行病学特征,为加强输入性疟疾的防控提供参考。方法收集中国疾病预防控制中心疾病监测信息报告系统中2014—2016年河南省疫情网络直报的疟疾病例信息,对赤道几内亚的输入性疟疾病例进行统计分析。结果 2014—2016年,河南省共报告从赤道几内亚输入的疟疾病例58例,其中恶性疟占74.1%(43/58),间日疟占1.7%(1/58),卵性疟占17.2%(10/58),三日疟占3.5%(2/58),恶性疟和卵形疟混合感染占3.5%(2/58)。河南省濮阳市和郑州市报告病例较多,占46.6%(27/58)。病例均为男性,以30~50岁的青壮年为主,农民、工人和民工占87.9%(51/58)。每月均有病例报告,无明显的季节性,其中1、9和12月份最多,占41.4%(24/58)。患者从发病到诊断时间最早0 d,最长47 d。22例(37.9%)住院治疗,36例(62.1%)门诊治疗,全部治愈。结论赤道几内亚为河南省输入性疟疾的主要来源国之一,其中以恶性疟病例较多,大多数病例能得到及时诊断,病例诊断后均能正规治疗,完全治愈。

Objective To analyze the epidemiological characteristics of malaria cases imported from Equatorial Guinea in Henan province in 2014—2016,so as to provide the evidence for imported malaria control. Methods The epidemiological information of malaria cases was collected through the Infectious Disease Reporting and Manage-ment System of China Information System for Disease Control and Prevention in 2014 —2016. The data of imported malaria cases from Equatorial Guinea was analyzed. Results In 2014—2016,a total of 58 imported malaria cases returned from Equatorial Guinea were reported in Henan province. Plasmodium falciparum, P. vivax, P. ovale, P.malariae cases,and the mix infection of P. falciparum and P. ovale cases accounted for 74.1%（43/58）,1.7%（1/58）,17.2%（10/58）,3.5%（2/58） and 3.5%（2/58）,respectively. The cases distributed mainly in Puyang and Zhengzhou city,accounted for 46.6%（27/58）. The cases were all male,30-50 years old,and the majority（51,87.9%） were farmers,workers and labors. The cases were reported in all the month without obvious seasonality. The majority（24,41.4%） were reported in January,September and December. For the interval of disease onset to diagnosis,the shortest was the day,the longest was 47 days. All the cases were cured,with 22 cases inpatient treatment and 36 outpatient. Conclusion Equatorial Guinea was one of the main source of imported malaria in Henan province,and the most cases were P. falciparum. The majority could be diagnosed in time,and all patients could be treated properly after being diagnozed.