%0 Journal Article %A HUANG Chao-jun %A HUANG Jia-yun %A JIANG Si-yang %A LIAO Ke-chang %A LIU Hao-hui %A QU Zhi-qiang %A TANG Hong-yang %A TANG Jin-fang %A ZHOU Dong-mei %A SHI Jian %T An analysis of dengue fever outbreak and Aedes surveillance data in Nanning,Guangxi Autonomous Region,China,2019 %D 2022 %R 10.11853/j.issn.1003.8280.2022.05.014 %J Chinese Journal of Vector Biology and Control %P 689-695 %V 33 %N 5 %X Objective To analyze the correlation between the dengue fever outbreak and Aedes surveillance density in Nanning,Guangxi Autonomous Region,China in 2019,and evaluate the role of Aedes surveillance in the early warning of dengue outbreaks in Nanning,and to provide a reference for improving local surveillance of Aedes mosquitoes.Methods We collected the data on the dengue outbreak and Aedes surveillance in Nanning in 2019 to analyze the epidemiological characteristics of the outbreak,the fluctuations in the density of Aedes mosquitoes,and the correlation between the outbreak and Aedes density fluctuations using descriptive epidemiological methods.Results The date of onset of the first local case of dengue fever in 2019 was June 28,and the quartiles (Q25,Q50,and Q75) of onset time were September 29,October 9,and October 20,respectively.The monthly cases of dengue fever from June to December were 1,0,12,275,647,93,and 5,respectively.The Breteau index (BI) by routine surveillance in Nanning was higher in June,July,and September in 2019,but in Nanning and its Jiangnan district,Xixiangtang district,Qingxiu district,and Liangqing district with the largest numbers of cases,the BI was all<5.The mosquito ovitrap index (MOI) by routine surveillance in Nanning was higher in June,August,and September in 2019,but the MOI in Nanning and its Qingxiu district was both<5.The mean net trap index by routine surveillance in Nanning was>2 mosquitoes/net·hour in May,June,July,and September,but it was<2 mosquitoes/net·hour in Xixiangtang district and Liangqing district.Before mosquito control,the BI by emergency monitoring was almost all>5 across Nanning,and the net trap index by emergency monitoring was<1 mosquito/net·hour in Liangqing district.After mosquito control,the BI of Qingxiu and Liangqing districts by emergency monitoring was higher than that by routine monitoring.The number of cases of dengue fever in each month had no significant correlation with the BI,MOI,or net trap index,regardless of routine surveillance,emergency surveillance,and overall analysis (all P>0.05).Conclusion The surveillance densities of Aedes mosquitoes in Nanning in 2019 were generally not correlated with the dengue fever outbreak in that year.The specific reasons need further investigation,and Aedes surveillance and data utilization in Nanning need to be improved. %U http://www.bmsw.net.cn/EN/10.11853/j.issn.1003.8280.2022.05.014