Journal
AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
Volume 88, Issue 5, Pages 971-981Publisher
AMER SOC TROP MED & HYGIENE
DOI: 10.4269/ajtmh.12-0478
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Funding
- Universidad de Especialidades Espiritu Santo
- Fulbright Institute of International Education fellowship
- European Union [243964, 282 378]
- European Commission
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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 Nino 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 Nino 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.
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