Epidemic characteristics and prevention and control strategy of imported dengue fever in Hebei province, 2011-2018
CAI Ya-nan, LIU Shi-you, WEI Ya-mei, HAN Xu, HAN Zhan-ying, ZHANG Yan-bo, XU Yong-gang, QI Shun-xiang, LI Qi
Department of Viral Disease Control and Prevention, Hebei Provincial Key Laboratory of Pathogens and Epidemiology of Infectious Diseases, Hebei Provincial Center for Disease Control and Prevention, Shijiazhuang, Hebei 050021, China
Abstract：Objective To analyze the epidemiological characteristics of imported dengue fever in Hebei province from 2011 to 2018, and to explore its prevention and control strategy and measures. Methods Descriptive epidemiological method was used to statistically analyze the incidence of imported dengue fever and the data about the surveyed cases in Hebei province from 2011 to 2018. Results A total of 54 cases of imported dengue fever were reported in Hebei province during 2011-2018, and most of the cases were mild, with no deaths. Cases were reported every month except February and peaked at period from May to October (accounting for 72.22%). Cases were reported mainly in Baoding and Shijiazhuang (59.26%). The male-to-female ratio was 6.71∶1.The group aged 20-49 years accounted for 85.18%. The most common occupation was farmer (n=20, accounting for 37.04%). 48 cases had definite importation sources, and all of them were cases imported from abroad, including 36 (75.00%) cases from Asia, 10 (20.83%) cases from Africa and 2 (4.17%) cases from Oceania. There were 1 case domestically imported from Guangdong province and 1 case domestically imported from Hunan province. The median interval between onset and diagnosis was 6.7 days. There were 19 clinically-diagnosed cases and 35 laboratory-confirmed cases. Conclusions Dengue fever cases in Hebei province in 2011-2018 were mainly the imported cases, showing a fluctuated increasing trend. Special attention should be paid to the discovery and report capacity of imported cases and dealing with patients in time so as to control the local prevalence of dengue fever.
2020, Vol. 27 
