云南省保山市2013-2019年境外输入性疟疾流行特征分析

Epidemic characteristics of imported malaria during 2013-2019 in Baoshan City, Yunnan Province

通过中国疾病预防控制中心传染病监测系统、寄生虫病防治信息系统,收集2013-2019年保山市疟疾疫情数据,采用Microsoft Excel 2007建立数据库并进行统计学分析。保山市共报告疟疾病例880例,境外输入性病例846例(96.1%), 2013年9月后,无本地感染疟疾病例报告。2013-2019年保山市境外输入性疟疾病例报告分别为181、 198、 248、 104、 55、 28、 32例。境外输入性疟疾病例中,间日疟765例(90.4%),恶性疟78例(9.2%),三日疟3例(0.4%);病例数地区分布中腾冲市最多(549例,64.9%),昌宁县最少(12例,1.4%);病例数高峰出现在4-7月(540例,63.8%),其中5月病例数最多(183例,21.6%);男性病例759例(89.7%);农民802例(94.8%);20~49岁青壮年病例704例(83.2%)。感染来源地以东南亚为主(841例,99.4%),其中缅甸最多(810例,95.7%)。846例境外输入性病例均为实验室确诊病例,从发病到确诊的时间最长58 d, 7 d内确诊754例(89.1%)。疾病预防控制中心报告279例(33.0%),乡镇卫生院报告265例(31.3%),综合医院报告204例(24.1%),民营医院及其他报告98例(11.6%)。

The malaria epidemic data in Baoshan City during 2013-2019 were collected through the Information Management System for the Prevention and Treatment of Parasitic Disease,the Infectious Disease Surveillance Reporting and Management System of the Chinese Center for Disease Control and Prevention.Database was established using Microsoft Excel 2007 for statistical analysis.A total of 880 cases of malaria were reported during 2013-2019 in Baoshan City,and 846(96.1%)cases were imported from abroad.No indigenous malaria cases were reported after September,2013.The numbers of imported malaria cases in Baoshan during 2013-2019 were181,198,248,104,55,28 and 32,respectively.Among the imported malaria cases,765(90.4%)were vivax malaria,78(9.2%)falciparum malaria,and 3(0.4%)quartan malaria.The number of cases was highest in Tengchong City(549 cases,64.9%),and lowest in Changning County(12 cases,1.42%).The peak of case number occurred from April to July(540 cases,63.8%),with the highest in May(183 cases,21.6%).Of all imported cases,759 were male(89.7%)and 802 were farmers(94.8%),and 704 cases were young adults aged 20-49 years(83.2%).The main source of infection was from Southeast Asia(841 cases,99.4%),with Myanmar accounting for the largest number of imported cases(810 cases,95.7%).All of the 846 imported cases were laboratory-confirmed,the longest time span from onset to diagnosis was 58 days,and 754(89.1%)cases were confirmed within 7 days.The centers for disease control and prevention reported 279 cases(33.0%),township hospitals reported 265 cases(31.3%),general hospitals reported 204 cases(24.1%),and private hospitals and others reported 98 cases(11.6%).