Read here and here. Politicians, such as Al Gore and Mitt Romney, and the lamestream press go out of their way to implicate global warming as the cause of anything that is not desired, including diseases. They make these claims despite a substantial body of peer-reveiwed science saying otherwise.
Two new studies, Haque et al. and Toro et al., analyze the actual empirical evidence and find no connection between global warming and the incidence of malaria and incidents of heart failure.
"The authors write that "malaria is the most important tropical and parasitic disease in the world," noting that in 2008 there were an estimated 243 million cases that accounted for an estimated 863,000 deaths...Haque et al. looked for potential relationships between malaria incidence and various climatic parameters (rainfall, temperature, humidity, sea surface temperature and the El Niño-Southern Oscillation), as well as the normalized difference vegetation index (NDVI), which is a satellite-derived measure of surface vegetation greenness...And in Bangladesh, where malaria is endemic, they report that in that same year, malaria morbidity and mortality totals were 84,690 and 154, respectively...The six scientists report that "after adjusting for potential mutual confounding between climatic factors there was no evidence for any association between the number of malaria cases and temperature, rainfall and humidity," and they say that "there was no evidence of an association between malaria cases and sea surface temperatures in the Bay of Bengal and NINO3." [Ubydul Haque, Masahiro Hashizume, Gregory E. Glass, Ashraf M. Dewan, Hans J. Overgaard, Taro Yamamoto 2010: PLoS ONE]
"Working with data pertaining to 7450 cardiovascular-related deaths that occurred within Budapest, Hungary, between 1995 and 2004 -- where the deceased were "medico-legally autopsied" -- Toro et al. looked for potential relationships between daily maximum, minimum and mean temperature, air humidity, air pressure, wind speed, global radiation and daily numbers of the heart-related deaths...scientists report and restate their primary finding numerous times throughout their paper, writing that (1) "both the maximum and the minimum daily temperatures tend to be lower when more death cases occur in a day," (2) "on the days with four or more death cases, the daily maximum and minimum temperatures tend to be lower than on days without any cardiovascular death events," (3) "the largest frequency of cardiovascular death cases was detected in cold and cooling weather conditions," (4) "we found a significant negative relationship between temperature and cardiovascular mortality," (5) "the analysis of 6-hour change of air pressure suggests that more acute or chronic vascular death cases occur during increasing air pressure conditions (implying cold weather fronts)," (6) "we found a high frequency of cardiovascular death in cold weather," (7) "a significant negative relationship was detected between daily maximum [and] minimum temperature[s] and the number of sudden cardiovascular death cases," and (8) "a significant negative correlation was detected between daily mean temperature and cardiovascular mortality." [Klára Törő, Judit Bartholy, Rita Pongrácz, Zsófia Kis, Éva Keller, György Dunay 2010: Journal of Forensic and Legal Medicine]
Additional infection-disease and peer-reviewed postings.