Surface water areas significantly impacted 2014 dengue outbreaks in Guangzhou, China

Journal Article · Sat Oct 15 04:00:00 EDT 2016 · Environmental Research

DOI:https://doi.org/10.1016/J.ENVRES.2016.05.039· OSTI ID:22689492

Tian, Huaiyu; Huang, Shanqian ^[1]; Zhou, Sen ^[2]; Bi, Peng ^[3]; Yang, Zhicong ^[4]; Li, Xiujun ^[5]; Chen, Lifan ^[1]; Cazelles, Bernard ^[6]; Yang, Jing ^[1]; Luo, Lei; Jing, Qinlong ^[4]; Yuan, Wenping ^[7]; Pei, Yao; Sun, Zhe ^[2]; Yue, Tianxiang ^[8]; Kwan, Mei-Po ^[9]; others, and

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1. State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing (China)
2. Ministry of Education Key Laboratory for Earth System Modelling, Center for Earth System Science, Tsinghua University, Beijing (China)
3. Discipline of Public Health, University of Adelaide, Adelaide (Australia)
4. Guangzhou Center for Disease Control and Prevention, Guangzhou (China)
5. School of Public Health, Shandong University, Jinan (China)
6. UMMISCO, UMI 209 IRD – UPMC, 93142 Bondy (France)
7. State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing (China)
8. State Key Laboratory of Resources and Environment Information System, Chinese Academy of Sciences, Beijing (China)
9. Department of Geography and Geographic Information Science, University of Illinois at Urbana-Champaign, Champaign, IL 61820 (United States)

Dengue transmission in urban areas is strongly influenced by a range of biological and environmental factors, yet the key drivers still need further exploration. To better understand mechanisms of environment–mosquito–urban dengue transmission, we propose an empirical model parameterized and cross-validated from a unique dataset including viral gene sequences, vector dynamics and human dengue cases in Guangzhou, China, together with a 36-year urban environmental change maps investigated by spatiotemporal satellite image fusion. The dengue epidemics in Guangzhou are highly episodic and were not associated with annual rainfall over time. Our results indicate that urban environmental changes, especially variations in surface area covered by water in urban areas, can substantially alter the virus population and dengue transmission. The recent severe dengue outbreaks in Guangzhou may be due to the surge in an artificial lake construction, which could increase infection force between vector (mainly Aedes albopictus) and host when urban water area significantly increased. Impacts of urban environmental change on dengue dynamics may not have been thoroughly investigated in the past studies and more work needs to be done to better understand the consequences of urbanization processes in our changing world. - Highlights: • Urban dengue outbreak is associated with water area in Guangzhou, 1978–2014. • Surface water area can alter population size of dengue virus in urban area. • Urban dengue outbreak is not associated with annual rainfall in Guangzhou. • Spatiotemporal satellite image fusion can investigate urban environmental change. • Urban environmental change could induce virus, vector, and dengue epidemic change.

• OSTI ID: 22689492
• Journal Information: Environmental Research, Journal Name: Environmental Research Vol. 150; ISSN ENVRAL; ISSN 0013-9351
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
EXPLORATION
MOSQUITOES
REMOTE SENSING
SURFACE AREA
URBAN AREAS
VIRUSES
WATER