COVID-19 prevention measures reduce dengue spread in Yunnan Province, China, but do not reduce established outbreak

The COVID-19 pandemic and measures against it provided a unique opportunity to understand the transmission of other infectious diseases and to evaluate the efficacy of COVID-19 prevention measures on them. Here we show a dengue epidemic in Yunnan, China, during the pandemic of COVID-19 was dramatica...

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Bibliographic Details
Published in:Emerging microbes & infections 2022-12, Vol.11 (1), p.240-249
Main Authors: Sheng, Z.Y., Li, M., Yang, R., Liu, Y.H., Yin, X.X., Mao, J. R., Brown, Heidi E., An, J., Zhou, H.N., Wang, P.G.
Format: Article
Language:English
Subjects:
Animals
China - epidemiology
Chlorocebus aethiops
Communicable Disease Control - methods
Coronaviruses
COVID-19
COVID-19 - epidemiology
COVID-19 - prevention & control
Dengue - epidemiology
Dengue - prevention & control
Dengue - transmission
Dengue fever
Dengue Virus
Disease Outbreaks - prevention & control
Disease prevention
Disease transmission
Epidemics
Genotype
Humans
Pandemics
Pandemics - prevention & control
Phylogeny
RNA, Viral
SARS-CoV-2
Serogroup
Spatial Analysis
Vero Cells
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Summary:The COVID-19 pandemic and measures against it provided a unique opportunity to understand the transmission of other infectious diseases and to evaluate the efficacy of COVID-19 prevention measures on them. Here we show a dengue epidemic in Yunnan, China, during the pandemic of COVID-19 was dramatically reduced compared to non-pandemic years and, importantly, spread was confined to only one city, Ruili. Three key features characterized this dengue outbreak: (i) the urban-to-suburban spread was efficiently blocked; (ii) the scale of epidemic in urban region was less affected; (iii) co-circulation of multiple strains was attenuated. These results suggested that countermeasures taken during COVID-19 pandemic are efficient to prevent dengue transmission between cities and from urban to suburban, as well to reduce the co-circulation of multiple serotypes or genotypes. Nevertheless, as revealed by the spatial analysis, once the dengue outbreak was established, its distribution was very stable and resistant to measures against COVID-19, implying the possibility to develop a precise prediction method.
ISSN:2222-1751
2222-1751
DOI:10.1080/22221751.2021.2022438