Objective: To understand the epidemiological characteristics of imported acute infectious diseases between 2008 and 2017 in the border areas of Yunnan province. Methods: All the cases occurred between January 2008 and December 2017 and related information was from the Chinese CDC infectious disease report information management system, according to definition of imported cases diagnosed by clinicians. Epidemiological characteristics of the imported cases of related information were gathered. Results: A total of 13 157 imported acute infectious diseases were reported from the border areas of Yunnan province, which accounted for 6.03% (13 157/218 284) of the total number of acute infectious diseases in the same areas from 2008 to 2017. Malaria, dengue fever and hand-foot-mouth disease were accounted for 56.05% (7 374/13 157), 21.82% (2 871/13 157) and 4.62% (608/13 157), of all the case, respectively. The number of imported malaria cases decreased annually. However, dengue fever showed a sharp increase. Peaks of the epidemics appeared as: May for malaria and October for dengue fever. Male patients were accounting for the majority (73.22%, 9 634/13 157), so as the patients with Chinese nationality (54.91%, 7 225/13 157). The age distribution appeared as: 67.12% (8 829/13 157) for the 15-44 year olds and 19.26% (2 535/13 157) were children below 14 years of age. Proportions of occupation appeared as: farmers (45.23%, 5 596/13 157), migrant workers (21.30%, 2 802/13 157) and children living at home (11.12%, 1 463/13 157). Most of the imported cases were coming from Myanmar and appearing in the following three counties: Ruili city, Tengchong city, and Yingjiang of Yunnan province. Cities/counties that with number of imported cases more than 10% of the local reported cases, would include Ruili city, Tengchong city, Zhenkang county and Mangshi of Yunnan province. Conclusions: Imported acute infectious disease was a serious public health problem in Yunnan province, 2008-2017. The main imported acute infectious diseases were malaria, dengue fever and hand-foot-mouth disease. The majority imported cases were accounting for Chinese, male, young adults and farmers. It is also important for immigration workers to carry out surveillance, prevention and control programs on infectious diseases when working in neighboring countries.
目的： 分析2008－2017年云南省边境地区急性传染病输入病例的流行病学特征，为制定云南省境外输入传染病的防控策略和措施提供科学依据。 方法： 收集发病日期在2008年1月至2017年12月中国CDC传染病报告信息管理系统的急性传染病输入病例个案信息，结合临床医生的病例诊断记录，描述输入病例的构成、时间、地区和人群分布等流行病学特征。 结果： 2008－2017年云南省边境地区共报告急性传染病输入病例13 157例，占边境地区急性传染报告病例数的6.03%（13 157/218 284），病种以疟疾、登革热和手足口病为主，分别占输入病例总数的56.05%（7 374/13 157）、21.82%（2 871/13 157）和4.62%（608/13 157）。输入病例的疟疾占比逐年下降，登革热占比逐年上升。输入病例中，男性占73.22%（9 634/13 157），中国籍占54.91%（7 225/13 157），15~44岁青壮年占67.12%（8 829/13 157），≤14岁儿童占19.26%（2 535/13 157），职业以农民（45.23%，5 596/13 157）、民工（21.30%，2 802/13 157）和散居儿童（11.12%，1 463/13 157）为主。每年5月和10月是输入传染病的高峰期，5月以疟疾为主，10月以登革热为主。输入病例主要来源国是缅甸。输入病例数位居前3位的市（县）是中国云南省瑞丽市、腾冲市和盈江县。境外输入病例数占当地报告急性传染病病例数>10%的市（县）有瑞丽市、腾冲市、镇康县和芒市。 结论： 2008－2017年云南省边境地区急性传染病境外输入疫情较为严重。疟疾、登革热和手足口病是主要病种，输入病例以中国籍、男性、青壮年、农民为主。应加强边境地区的出入境务工人员的急性传染病监测和防控工作。.
Keywords: Acute infectious diseases; Border area; Epidemiological characteristics; Imported cases.