Evaluation of the risk of imported dengue and local spreading through mosquito vectors in Nanjing in 2020
LU Mo-yuan1, 2, ZHANG Shou-gang2, MA Tao2, SUN Yan-qun2, ZHANG Yan2, SUN Hong-min2, LI Wei1, WEI Ping-min1
1. Department of Epidemiology and Health Statistics, School of Public Health, Southeast University, Nanjing 230009, China; 2. Institute of disinfection and vector control, Nanjing municipal Center for Disease Control and Prevention, Nanjing 210003, China
Abstract：To determine the risk of imported dengue cases and the risk of local mosquito-borne transmission of dengue in Nanjing in 2020, and to provide basis for the formulation of prevention and control strategies for local dengue transmission. Descriptive epidemiological methods were used to analyze the dengue epidemic situation in Nanjing from 2015 to 2019. Experiments and field investigations were conducted to collect dengue vector density, drug resistance and control effect data in Nanjing. Qualitative methods were used for risk analysis and assessment based on collected data. The results showed that June to November was the peak period of dengue in Nanjing, and the peak period of larvae and adult mosquito density was July to September. Resistance to five commonly used insecticides in Aedes albopictus was found. The average treatment times was 10.3 at each emergency treatment point, and the rate of compliant treatments was 55.56%. In conclusion, the imported dengue cases were still found in Nanjing in 2020, and July-September will be the peak of local transmission. Therefore, the management of ports and hospitals should be strengthened, insecticide should be used scientifically and regularly to carry out emergency treatment for dengue mosquito vectors. Moreover, a dynamic hierarchical warning system should be established to scientifically prevent and control dengue epidemic.
陆墨原, 张守刚, 马涛, 孙燕群, 张艳, 孙红敏, 李伟, 卫平民. 2020年南京市登革热输入风险及蚊媒本地传播风险评估[J]. 中国人兽共患病学报, 2020, 36(9): 720-725.
LU Mo-yuan, ZHANG Shou-gang, MA Tao, SUN Yan-qun, ZHANG Yan, SUN Hong-min, LI Wei, WEI Ping-min. Evaluation of the risk of imported dengue and local spreading through mosquito vectors in Nanjing in 2020. Chinese Journal of Zoonoses, 2020, 36(9): 720-725.
2020, Vol. 36 
