Climate and non-climate drivers of dengue epidemics in southern coastal Ecuador.


Stewart-Ibarra, AM; Lowe, R; (2013) Climate and non-climate drivers of dengue epidemics in southern coastal Ecuador. The American journal of tropical medicine and hygiene, 88 (5). pp. 971-81. ISSN 0002-9637 DOI: https://doi.org/10.4269/ajtmh.12-0478

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Abstract

: We report a statistical mixed model for assessing the importance of climate and non-climate drivers of interannual variability in dengue fever in southern coastal Ecuador. Local climate data and Pacific sea surface temperatures (Oceanic Niño Index [ONI]) were used to predict dengue standardized morbidity ratios (SMRs; 1995-2010). Unobserved confounding factors were accounted for using non-structured yearly random effects. We found that ONI, rainfall, and minimum temperature were positively associated with dengue, with more cases of dengue during El Niño events. We assessed the influence of non-climatic factors on dengue SMR using a subset of data (2001-2010) and found that the percent of households with Aedes aegypti immatures was also a significant predictor. Our results indicate that monitoring the climate and non-climate drivers identified in this study could provide some predictive lead for forecasting dengue epidemics, showing the potential to develop a dengue early-warning system in this region.<br/>

Item Type: Article
Faculty and Department: Faculty of Epidemiology and Population Health > Dept of Infectious Disease Epidemiology
PubMed ID: 23478584
Web of Science ID: 318394600027
URI: http://researchonline.lshtm.ac.uk/id/eprint/3515648

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