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| Epidemiological characteristics of overseas imported dengue fever and malaria cases in Yunnan Province from 2015 to 2021 |
| ZHANG Rongbing1, HONG Jin1, TIAN Rong1, CHEN Zhihui1, YANG Qian1, YE Qing1, LI Jianrong1, MA Honglin1, CHEN Lihua2, PENG Xia2
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1. Department of Endemic and Parasitic Diseases, Kunming Center for Disease Control and Prevention, Kunming, Yunnan 650228, China;
2. Yunnan Provincial Center for Disease Control and Prevention, Kunming, Yunnan 650228, China |
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Abstract Objective To investigate the epidemiological characteristics of overseas imported dengue fever and malaria cases in Yunnan Province from 2015 to 2021, so as to provide insights into the prevention and control of overseas imported arthropod-borne infectious diseases. Methods The data pertaining to imported dengue fever and malaria cases in Yunnan Province from 2015 to 2021 were collected from the Chinese Disease Prevention and Control Information System, and the temporal distribution, regional distribution, population distribution, sources, diagnosis and treatment of imported dengue fever and malaria cases were descriptively analyzed. Results Totally 4 332 overseas imported dengue fever cases and 2 011 overseas imported malaria cases were reported in Yunnan Province form 2015 to 2021, which accounted for 30.09% of all reported dengue fever cases and 98.53% of all reported malaria cases. The number of overseas imported dengue fever and malaria cases peaked from August to November (83.13% of all imported dengue fever cases) and from April to July (59.08% of all imported malaria cases), and the cases were predominantly reported in Dehong Prefecture (50.99% and 58.88%), with farmers as the predominant occupation (40.21% and 67.93%). The dengue fever and malaria cases were mainly imported from Southeast Asia (99.04% and 88.21%), and the proportions of definitive diagnosis of dengue fever and malaria were 88.33% and 97.80% at township hospitals, respectively. Conclusions The number of overseas imported dengue fever and malaria cases peaked from August to November and from April to July in Yunnan Province from 2015 to 2021, and the cases were predominantly reported in Dehong Prefecture and imported from Southeast Asia, with farmers as the predominant occupation.
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Received: 07 July 2022
Revised: 27 December 2022
Published: 21 February 2023
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