Dengue Fever and Climate Change
Johansson, M.A., Cummings, D.A.T. and Glass, G.E. 2009. Multiyear climate variability and dengue-El Niño Southern Oscillation, weather and dengue incidence in Puerto Rico, Mexico, and Thailand: A longitudinal data analysis. PLoS Medicine 6: e1000168.
The three researchers report that they "did not find evidence of a strong, consistent relationship in any of the study areas," while Rohani (2009), who wrote a Perspective piece on their study, states that the three researchers found "no systematic association between multi-annual dengue outbreaks and El Niño Southern Oscillation." Thus, as stated in the "Editors' Summary" of Johansson et al.'s paper, their findings "provide little evidence for any relationship between ENSO, climate, and dengue incidence."
In light of the inconclusive nature of Johansson et al.'s analysis, there still remains a lack of substantive real-world support for the IPCC-based claim that global warming promotes the global intensification and spread of the spectrum of diseases caused by the different serotypes of the family of dengue viruses.
Rohani, P. 2009. The link between dengue incidence and El Niño Southern Oscillation. PLoS Medicine 6: e1000185.