关键词: 登革热, 暴发流行, 流行病学, 瑞丽市

Abstract: Objective　To investigate the epidemiological characteristics of the 2013 outbreak of dengue fever in Ruili of Yunnan province, China, and to promote management of dengue fever epidemics. Methods　An investigation was conducted among all dengue fever cases. Serum samples of all cases were tested by NS1 antigen detection. The density of vector mosquitoes was determined by the Breteau index (BI). Results　This outbreak of dengue fever lasted 104 days, and there were 232 confirmed cases, of whom 145 were locally infected cases, and 87 were imported cases from Myanmar. Cases were mainly distributed in the urban areas of Ruili (53.45%, 124/232). The male-to?female ratio was 1.23∶1; the patients were mainly 20-49 years old, with the youngest 1 year old and the oldest 80 years old. Most of the patients were business people, farmers, housekeepers, and unemployed persons. Conclusion　This was the first local outbreak of dengue fever in Ruili, which was caused by both Aedes albopictus and Ae. aegypti. With combined control of Aedes sp. mosquitoes and BI not higher than 5.0, the epidemic of dengue fever can be controlled.

Key words: Dengue fever, Outbreak, Epidemiological characteristics, Ruili