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dc.contributor.authorSang, Shaowei
dc.contributor.authorYin, Wenwu
dc.contributor.authorBi, Peng
dc.contributor.authorZhang, Honglong
dc.contributor.authorWang, Chenggang
dc.contributor.authorLiu, Xiaobo
dc.contributor.authorChen, Bin
dc.contributor.authorYang, Weizhong
dc.contributor.authorLiu, Qiyong
dc.date.accessioned2017-09-04T02:33:21Z
dc.date.available2017-09-04T02:33:21Z
dc.date.issued2014
dc.identifier.issn1932-6203
dc.identifier.doi10.1371/journal.pone.0102755
dc.identifier.urihttp://hdl.handle.net/10072/141082
dc.description.abstractIntroduction: Each year there are approximately 390 million dengue infections worldwide. Weather variables have a significant impact on the transmission of Dengue Fever (DF), a mosquito borne viral disease. DF in mainland China is characterized as an imported disease. Hence it is necessary to explore the roles of imported cases, mosquito density and climate variability in dengue transmission in China. The study was to identify the relationship between dengue occurrence and possible risk factors and to develop a predicting model for dengue’s control and prevention purpose. Methodology and Principal Findings: Three traditional suburbs and one district with an international airport in Guangzhou city were selected as the study areas. Autocorrelation and cross-correlation analysis were used to perform univariate analysis to identify possible risk factors, with relevant lagged effects, associated with local dengue cases. Principal component analysis (PCA) was applied to extract principal components and PCA score was used to represent the original variables to reduce multi-collinearity. Combining the univariate analysis and prior knowledge, time-series Poisson regression analysis was conducted to quantify the relationship between weather variables, Breteau Index, imported DF cases and the local dengue transmission in Guangzhou, China. The goodness-of-fit of the constructed model was determined by pseudo-R2, Akaike information criterion (AIC) and residual test. There were a total of 707 notified local DF cases from March 2006 to December 2012, with a seasonal distribution from August to November. There were a total of 65 notified imported DF cases from 20 countries, with forty-six cases (70.8%) imported from Southeast Asia. The model showed that local DF cases were positively associated with mosquito density, imported cases, temperature, precipitation, vapour pressure and minimum relative humidity, whilst being negatively associated with air pressure, with different time lags. Conclusions: Imported DF cases and mosquito density play a critical role in local DF transmission, together with weather variables. The establishment of an early warning system, using existing surveillance datasets will help to control and prevent dengue in Guangzhou, China.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherPublic Library of Science
dc.publisher.placeUnited States
dc.relation.ispartofpagefrome102755-1
dc.relation.ispartofpagetoe102755-10
dc.relation.ispartofissue7
dc.relation.ispartofjournalPloS One
dc.relation.ispartofvolume9
dc.subject.fieldofresearchOther environmental sciences not elsewhere classified
dc.subject.fieldofresearchcode419999
dc.titlePredicting Local Dengue Transmission in Guangzhou, China, through the Influence of Imported Cases, Mosquito Density and Climate Variability
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© 2014 Sang et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
gro.hasfulltextFull Text
gro.griffith.authorLiu, Qiyong


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