Another one bites the dust!

Discussion in 'Environment' started by westwall, Dec 21, 2011.

  1. westwall
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    westwall USMB Mod Staff Member Gold Supporting Member Supporting Member

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    Remember the meme that global warming would cause greater spread of malaria? Looks like that is yet another in a long list of failed concerns....




    21 December 2011


    A common assumption is that rising global temperatures will increase the spread of malaria — the deadly mosquito-borne disease that affects millions of people worldwide. But a study out today in Biology Letters finds that warmer temperatures seem to slow transmission of malaria-causing parasites, by reducing their infectiousness1.

    The study was done with rodent malaria, but the researchers, at Pennsylvania State University in University Park, expect the pattern to apply to human malaria and possibly to other mosquito-borne diseases such as dengue fever and West Nile virus.

    Malaria transmission may actually fall, rather than rise, at higher temperatures.

    James Gathany / CDC

    Studies predicting that warmer climates will increase malaria infections commonly assume that the disease-causing parasites will develop faster and that the ability of the mosquito to acquire, maintain and transmit the pathogen will remain constant. They conclude that as temperature rises, mosquitoes become infectious quicker and therefore malaria transmission increases.

    But the latest study shows that temperature has a more complex effect. As temperature rises, parasites do develop faster, but fewer of them become infectious.




    Global warming wilts malaria : Nature News & Comment
     
  2. syrenn
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    syrenn BANNED

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    Truthfully, if malaira is on the rise i would not blame warming... but the outlaw of DDT. Its just rebounding to where it was before the use of it.


     
  3. Dragon
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    Dragon Senior Member

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    That's interesting. Fairly good news, too. (Your title reveals you as a denialist dupe, but this is still interesting and still good news.)
     
  4. westwall
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    westwall USMB Mod Staff Member Gold Supporting Member Supporting Member

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    No, my title reveals me as a sceptic. The only dupes are those who still bow to the alter of AGW as it is currently preached. Come up with some legit empirical data and I will pay attention once again. But, until that time comes I will simply stay with the scientific method.
     
  5. konradv
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    konradv Gold Member

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    That's the parasite. Any info on the mosquito? The parasite may be slowed down, but if the population of mosquitoes goes up significantly due to warmer weather, it may not matter at all. If the parasite is slowed down 50% but the population goes up 10-fold, for example, it would be a disaster. Sorry, haven't had the chance to to read the article yet, but my concern isn't addressed in the blurb. If they haven't considered that point, the study is incomplete and not really that helpful.
     
  6. Old Rocks
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    Old Rocks Diamond Member

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    Never ceases to amaze me how absolutely ill informed and stupid you 'Conservatives' truly are. DDT is being used in areas where malaria is endemic. Used to the point that the health of humans is being endangered by that very dangerous pesticide.

    You might consider listening less to obese drug addicts and more to scientists and doctors.


    Should DDT Be Used to Combat Malaria?: Scientific American

    A panel of scientists recommended today that the spraying of DDT in malaria-plagued Africa and Asia should be greatly reduced because people are exposed in their homes to high levels that may cause serious health effects.

    The scientists from the United States and South Africa said the insecticide, banned decades ago in most of the world, should only be used as a last resort in combating malaria.

    The stance of the panel, led by a University of California epidemiologist, is likely to be controversial with public health officials. Use of DDT to fight malaria has been increasing since it was endorsed in 2006 by the World Health Organization and the President's Malaria Initiative, a U.S. aid program launched by former President Bush.

    In many African countries, as well as India and North Korea, the pesticide is sprayed inside homes and buildings to kill mosquitoes that carry malaria.
     
  7. westwall
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    westwall USMB Mod Staff Member Gold Supporting Member Supporting Member

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    The use of DDT use was banned worldwide by the Stockholm Convention in 2001, that being said not everyone signed the convention. As olfraud notes it is being produced illegally in South Africa and North Korea. China is also producing it. However, its widespread use was banned and there are at least 2 million deaths per year that are directly attributable to that ban.

    So, the question is, would more people die from it's use or its non use?
     
  8. Old Rocks
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    Old Rocks Diamond Member

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    Two million deaths? Source? Your ass?
     
  9. CrusaderFrank
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    CrusaderFrank Diamond Member

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    global warming would cause greater spread of malaria
    global warming would cause decreased spread of malaria
    global warming would cause deadlier strain of malaria
    global warming would cause harmless strain of malaria
    global warming would cause greater spread of malaria
    global warming would cause tree ring malaria
    global warming would cause hockey stick malaria
     
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  10. CrusaderFrank
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    CrusaderFrank Diamond Member

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    What are we calling it these days? Global Warming? Manmade Global Warming? Climate Change? Climate Disruption? Global WarmerCoolering? Global CoolerWarmering?
     

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