Global distribution of malaria as a function of time. The developed countries have largely eradicated malaria in temperate regions through mosquito control:
http://www.nature.com/nature/journal/v41...
Same data, perhaps less reputable source, showing pre-industrial revolution:
http://www.rollbackmalaria.org/images/ma...
Malaria is a mosquito-borne disease, not a tropical disease. Wherever there are mosquitoes there can be malaria.
The canonical tropical disease that will be affected by global warming is dengue fever. Dengue is tropical, will move polewards as the planet warms, and will affect billions.
No it isn't exclusively tropical though it quite probably originated in Africa sometime before we did.
Though Malaria cases in the U.S. currently average less than 2000 per year it was quite a serious health problem here until the discovery of DDT during WW2 made effective mosquito eradication possible in the late 1940's & early 50's.
http://www.cdc.gov/malaria/about/history...
http://www.boingboing.net/2009/12/07/mal...
The main reason malaria outbreaks have been a recurring problem in Siberia is that's where all the mosquito's are.
If you want to find money you go to a bank, if you want to find mosquito's you go to the subarctic tundra & high latitude prairies.
http://finance.yahoo.com/news/whats-buzz...
The only way climate is a Malaria factor is the fact that In the hot tropics people wear few clothes & sleep uncovered, in cold high latitudes people are covered with heavy clothing 10 months of the year & only their face & hands are exposed to mosquitos.
Nah. It's found around the world in swampy regions. Venice, Italy was founded on islands surrounded by malarial swamps. The Romans had developed a resistance to malaria which the invading barbarians lacked so was a safe refuge. Israel's wetter lowlands were malarial swamps from 1200 to 1900. The Mississippi River basin was prone to Yellow Fever out breaks so was sparsely populated by native tribes. They believe the mound builders and others suffered from a series of malarial epidemics which wiped out their societies.
Your question leaves a lot to be desired. Is malaria only found in the tropics? No. In the US, historically, malaria used to be quite common. Many people in the gold rush perished due to malaria. The Eastern half of Iowa was thought to be uninhabitable, at one time, due to malaria being so prevalent.
Malaria is not caused by AGW. At one time we had this disease under control with very few cases of it. Then in the early seventies the US banned DDT and the world followed. The control of malaria went out the window. Ruckleshaus, who was responsible for the ban admitted that when he banned DDT, it was a power trip and had no scientific value.
Malaria in regard to global warming is twofold One warmer temps have been shown recently to decrease in rodents and is is suspected to be so in humans, although not proven. The spread of malaria in regard to GW has to do mostly with torrential rains producing pools of water where mosquitoes can breed and spread both malaria and dengue fever.
Mosquitoes seem to be most active a couple hours after sunrise and also before sunset, although they are prevalent throughout the day
Just because a place isn't tropical doesn't mean that it is never warm.
http://www.vancouverite.com/2009/09/13/t...
Malaria carrying mosquitoes may have been transplanted into Siberia and could have survived until the winter.
Malaria itself is not a tropical disease, but it depends on the carrier, some are tropical some are not.
Srry to b rude and just posting links but its not random...
Almost every time I see someone here mention something about increases in malaria as a possible or probable consequence of AGW, at least one person will answer with something like: "In fact, the most catastrophic epidemic on record anywhere in the world occurred in the Soviet Union in the 1920s, with a peak incidence of 13 million cases per year, and 600,000 deaths. Transmission was high in many parts of Siberia, and there were 30,000 cases and 10,000 deaths due to falciparum infection (the most deadly malaria parasite) in Archangel, close to the Arctic circle." (quoted from an answer on one of my questions)
But, well, the plural of "anecdote" is not "data". Does anyone have any actual data about the frequency of malaria in tropical vs temperate, subarctic, and arctic regions? Are cases like the Soviet Union in the '20s a rare anomaly, or a routine occurrence? Any other thoughts?
