Dengue vectors and the natural infection in border with Laos, Jiangcheng County,China
WANG Jian1, XIE Lü1, XIE Xiao-lu2, DONG Xue-shu1, JIANG Jin-yong1, YANG Bo2, LI Chun-min1, YANG Zhong-hua1, SUN Xiao-dong1, LIN Zu-rui1, ZHOU Hong-ning1
1. Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research,Yunnan Provincial Center of Arborvirus Research, Yunnan Provincial Collaborative Innovation Center for Public Health and Disease Prevention and Control, Yunnan Center for Malaria Research of Yunnan Institute of Parasitic Disease, Pu’er 665000, China; 2. Jiangcheng Center for Disease Control and Prevention, Jiangcheng 665900, China
Abstract：We investigated the population density, ecological habitats and the natural infection of the dengue vectors in border with Laos in Yunnan Province, so as to provide data for the prevention and control of dengue fever in border area of Yunnan Province. We selected three villages in Jiangcheng County as surveillance sites from June to October,2015. Adult mosquitoes active in the daytime were captured by human-landing catche method. Meantime, the ecological habitats of adults mosquitoes and population density of larvae in the three surveillance sites were also investigated. The captured adult mosquitoes were carried by liquid nitrogen container and dengue virus in mosquitoes was detected by RT-PCR. Results showed that a total of 2 247 adult mosquitoes were captured by human landing catches in the daytime and mosquitoes classification was 20 species in 7 genus with 1 405 Ae. albopictus (62.53%) as dominant species and 438 Armigeres subalbatus (19.49%) as subordinate species. Ae. aegypti were not captured. The average population density of Ae. albopictus adults was 16.7 per person hour. The average house index (HI), breteau index (BI), container index (CI) and thousand-person index of Ae. albopictus was 12.0, 18.3, 2.2, and 25.4 respectively. The density peaked in August and September. The dominant breeding environment of Ae. albopictus were used tires, bamboo tubes, jar, and, accounting for 26.3%,23.4% and 20.4% of positive water containers, respectively. RT-PCR detection of 37 groups of mosquitoes from captured,Flavivirus positive 17 groups and the positive rate of group was 46.0%. Dengue virus was not identified. The dengue fever surveillance should be strengthened in Jiangcheng County bordered with Laos due to the wide distribution and high population density of Ae. albopictus in this district.
王剑, 谢吕, 谢晓露, 董学书, 姜进勇, 杨波, 李春敏, 杨中华, 孙晓东, 林祖锐, 周红宁. 中老边境地区江城县登革热媒介及病毒感染调查[J]. 中国人兽共患病学报, 2016, 32(9): 843-849.
WANG Jian, XIE Lü, XIE Xiao-lu, DONG Xue-shu, JIANG Jin-yong, YANG Bo, LI Chun-min, YANG Zhong-hua, SUN Xiao-dong, LIN Zu-rui, ZHOU Hong-ning. Dengue vectors and the natural infection in border with Laos, Jiangcheng County,China. Chinese Journal of Zoonoses, 2016, 32(9): 843-849.
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2016, Vol. 32 
