November 16, 2009
Climate Variability And Dengue Incidence
Press release from PLoS Medicine
Research published this week in PLoS Medicine demonstrates associations between local rainfall and temperature and cases of dengue fever, which affects an estimated fifty million people per year worldwide. But the study finds little evidence that the El NiÃ±o-Southern Oscillation "“ the climate cycle that occurs every three to four years as a result of the warming of the oceans in the eastern Pacific "“ has a significant impact on the incidence of dengue in Mexico, Puerto Rico or Thailand.
The authors acknowledge that El NiÃ±o could still play a role undetected by this research. But as Pejman Rohani of the University of Michigan "“ uninvolved in the research "“ states in a related Perspective, the absence of a predictable link between El NiÃ±o and dengue transmission "is an important piece of information for the development of early warning systems".
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