Surveillance and analysis of dengue vector <i>Aedes albopictus</i> in Tianjin, China, 2019-2021

LI Shi-hao, WANG Wei, ZHANG Jing, LI Pei-yu, LI Jin-yue, QIN Na

doi:10.11853/j.issn.1003.8280.2022.06.010

Chinese Journal of Vector Biology and Control >

2022 , Vol. 33 >Issue 6: 820 - 822

DOI: https://doi.org/10.11853/j.issn.1003.8280.2022.06.010

Vector Surveillance

Surveillance and analysis of dengue vector Aedes albopictus in Tianjin, China, 2019-2021

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Department of Vector Biology, Tianjin Center for Disease Control and Prevention, Tianjin 300011, China

Received date: 2022-08-18

Online published: 2022-12-09

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Abstract

Objective To understand the density, distribution, seasonal fluctuation, and infection of Dengue virus of dengue vector Aedes albopictus in Tianjin, China, and to provide a scientific basis for the control, risk assessment, and early warning of dengue fever. Methods The Breteau index (BI) method was used to monitor the density of Ae. albopictus population from 2019 to 2021. Reverse transcription-polymerase chain reaction (RT-PCR) was performed to detect Dengue virus. SPSS 24.0 software was used for data analysis. Categorical data were compared by χ² test. Results The BI were 0.57, 0.61, and 0.86 in Tianjin in the three years, respectively, and average BI value peaked in August. The container index (CI) were 1.05%, 1.25%, and 1.93% in the three years, respectively. A total of 27 000 female adults and larvae of Ae. albopictus were detected for dengue virus and all the results were negative. Conclusion The Ae. albopictus density was relatively low and Dengue virus were not found in them in Tianjin from 2019 to 2021. Nevertheless, environmental monitoring and management should be strengthened.

Key words： Dengue fever; Aedes albopictus; Breteau index; Tianjin

Cite this article

LI Shi-hao, WANG Wei, ZHANG Jing, LI Pei-yu, LI Jin-yue, QIN Na . Surveillance and analysis of dengue vector Aedes albopictus in Tianjin, China, 2019-2021[J]. Chinese Journal of Vector Biology and Control, 2022 , 33(6) : 820 -822 . DOI: 10.11853/j.issn.1003.8280.2022.06.010

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