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Associations between Dengue Incidence, Ecological Factors, and Anthropogenic Factors in Singapore.
Tewari, Pranav; Guo, Peihong; Dickens, Borame; Ma, Pei; Bansal, Somya; Lim, Jue Tao.
Affiliation
  • Tewari P; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore.
  • Guo P; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore.
  • Dickens B; Saw Swee Hock School of Public Health, National University of Singapore, Singapore 117549, Singapore.
  • Ma P; Saw Swee Hock School of Public Health, National University of Singapore, Singapore 117549, Singapore.
  • Bansal S; Saw Swee Hock School of Public Health, National University of Singapore, Singapore 117549, Singapore.
  • Lim JT; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore.
Viruses ; 15(9)2023 09 13.
Article in En | MEDLINE | ID: mdl-37766323
Singapore experiences endemic dengue. Vector control remains the primary means to reduce transmission due to the lack of available therapeutics. Resource limitations mean that vector-control tools need to be optimized, which can be achieved by studying risk factors related to disease transmission. We developed a statistical modelling framework which can account for a high-resolution and high-dimensional set of covariates to delineate spatio-temporal characteristics that are associated with dengue transmission from 2014 to 2020 in Singapore. We applied the proposed framework to two distinct datasets, stratified based on the primary type of housing within each spatial unit. Generalized additive models reveal non-linear exposure responses between a large range of ecological and anthropogenic factors as well as dengue incidence rates. At values below their mean, lesser mean total daily rainfall (Incidence rate ratio (IRR): 3.75, 95% CI: 1.00-14.05, Mean: 4.40 mm), decreased mean windspeed (IRR: 3.65, 95% CI: 1.87-7.10, Mean: 4.53 km/h), and lower building heights (IRR: 2.62, 95% CI: 1.44-4.77, Mean: 6.5 m) displayed positive associations, while higher than average annual NO2 concentrations (IRR: 0.35, 95% CI: 0.18-0.66, Mean: 13.8 ppb) were estimated to be negatively associated with dengue incidence rates. Our study provides an understanding of associations between ecological and anthropogenic characteristics with dengue transmission. These findings help us understand high-risk areas of dengue transmission, and allows for land-use planning and formulation of vector control policies.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Dengue Type of study: Incidence_studies / Prognostic_studies / Risk_factors_studies Limits: Humans Country/Region as subject: Asia Language: En Journal: Viruses Year: 2023 Document type: Article Affiliation country: Singapore Country of publication: Switzerland

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Dengue Type of study: Incidence_studies / Prognostic_studies / Risk_factors_studies Limits: Humans Country/Region as subject: Asia Language: En Journal: Viruses Year: 2023 Document type: Article Affiliation country: Singapore Country of publication: Switzerland