ISSN 1003-8280 CN 10-1522/R 中国疾病预防控制中心 主办
Chinese Journal of Vector Biology and Control >
National surveillance on larval Aedes mosquito in China, 2015-2017
Received date: 2018-07-03
Online published: 2018-08-20
Supported by
Supported by the National Natural Science Foundation of China(No. 81703280), National Science and Technology Major Project(No. 2017ZX10303404-005) and National Key Research and Development Project (No. 2016YFC1200802, 2016YFC1200502)
Objective To analyze larval Aedes density of 23 surveillance provinces in China from 2015 to 2017, and to provide scientific evidence for the risk assessment, early-warning, and control of Aedes-borne diseases. Methods Aedes larvae density data were collected from surveillance provinces of the dengue fever central government transfer payments project between 2015 and 2017, and were analyzed in different years and regions by SPSS 20.0 and Excel 2007 softwares. Results During the study period(2015-2017), the Breteau index(BI) in Hainan throughout the years, Zhejiang and Fujian during April to November, Guangxi during April to September, and Yunnan during June to October, were higher than 5, the Dengue virus transmission threshold, and reached dengue transmission risk level. The Mosq-ovitrap index(MOI) in Guangxi during April to October and Guangdong during March to November, were higher than 5, and showed the same trend as BI surveillance. The BI in Chongqing, Anhui, Jiangxi, Henan, Hubei, and Sichuan during most of surveillance months from May to October were higher than 5; Furthermore, BI in Henan and Hubei in most surveillance months were higher than 10, and reached dengue outbreak level. BI in Shanghai and Hunan during most surveillance months from May to September were higher than 5. BI in Hebei during June to September 2016 to 2017, and that in Shandong during July to September 2017 were higher than 5. BI during June to September 2016 and in May 2017 in Shaanxi were all greater than 5. Conclusion The dengue transmission risk varies in different provinces temporally. Overall, the category 1 provinces in southern parts of China including Guangdong, Yunnan, Guangxi, Hainan, Fujian, and Zhejiang have relatively high risk than other provinces. It is suggested that Aedes surveillance, risk assessment, early-warning, prevention and control should be strengthened in key provinces especially in south China for fostering the prevention and control of Aedes-borne diseases in the future.
Key words： Aedes; Larvae; Surveillance; Risk assessment
LIU Xiao-bo, GUO Yu-hong, WU Hai-xia, LI Quan-cheng, YUE Yu-juan, REN Dong-sheng, LI Gui-chang, SONG Xiu-ping, WANG Jun, LU Liang, LIU Qi-yong . National surveillance on larval Aedes mosquito in China, 2015-2017[J]. Chinese Journal of Vector Biology and Control, 2018 , 29(4) : 325 -330 . DOI: 10.11853/j.issn.1003.8280.2018.04.001
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