Dengue Epidemics in Peru: Climate and Geography's Role
Author Information
Author(s): Gerardo Chowell, Bernard Cazelles, Hélène Broutin, Cesar V Munayco
Primary Institution: Arizona State University
Hypothesis
Are the timing differences in dengue epidemics between jungle and coastal regions in Peru significantly associated with local climate factors?
Conclusion
Dengue is highly persistent in jungle areas of Peru, with epidemics peaking around March, and the timing differences in epidemics between jungle and coastal regions are significantly linked to seasonal temperature cycles.
Supporting Evidence
- Dengue cases were reported in jungle and coastal regions, with 47% and 49% of cases respectively.
- Dengue epidemics in jungle regions peak before those in coastal regions by about 6 weeks.
- The study identified 380 dengue outbreaks during the study period.
Takeaway
Dengue fever is more common in jungle areas of Peru, especially when it rains a lot, and this can affect when outbreaks happen in nearby coastal areas.
Methodology
The study analyzed weekly dengue case data from 1994-2008 across different provinces in Peru, correlating it with climate and demographic factors.
Potential Biases
Potential biases may arise from the homogeneity of reporting and coding of dengue cases across different areas.
Limitations
The study relied on the assumption that reported dengue cases were a reliable indicator and that reporting was consistent across regions.
Participant Demographics
The population of Peru is approximately 28 million, with significant geographic and demographic diversity.
Statistical Information
P-Value
<0.0001
Confidence Interval
95%
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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