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SUNDAY, NOVEMBER 22, 2009
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Malaria Jumped From Chimps to Humans

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(Newser) – The parasite that causes malaria almost certainly jumped from chimpanzees to humans much like the AIDS virus did, National Geographic reports. Scientists initially believed that the malaria parasite that kills over a million people annually was older than humanity. But new research has found that it is a mutant version of one of many strains that affect chimpanzees. They believe it may have jumped between species as recently as 10,000 years ago.

The current belief that the deadliest strain of malaria "has been in humans for millions and millions of years is wrong," said a study author. "We now know that there was a point in time when this was primarily a disease in chimpanzees that jumped and took hold in humans." The researchers believe that the new knowledge of malaria's origins could lead to a breakthrough in the search for a malaria vaccine.

The closest known relative of the strain of malaria deadliest to humans is a parasite found in chimps.
The closest known relative of the strain of malaria deadliest to humans is a parasite found in chimps.   (AP Photo/Michael L. Wilson, Nature)
"The human parasites are sitting on a very, very narrow branch in the midst of a very complex and diverse tree of chimpanzee parasites," a researcher said.   (AP Photo/Central Washington University)
Researchers believe malaria was spread from chimps to humans by mosquitoes.
Researchers believe malaria was spread from chimps to humans by mosquitoes.   (©vmiramontes)
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When malaria transferred to humans, it became very severe very quickly. The disease in humans has become resistant to many drugs. It's my hope that our discovery will bring us closer to making a vaccine.
- Study co-author Francisco Ayala

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3 comments
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armywife
Aug 4, 09 3:17 AM CDT
in the meantime, we'll just have to keep drinking gin and quinine-enriched tonic, darnit. Reply
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DarkFrancis
Aug 4, 09 4:35 AM CDT
I know...tonic can get very expensive when you add medicinal ingredients, like quinine and Bombay Sapphire.
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DarkFrancis
Aug 4, 09 4:36 AM CDT
Gadzooks! Are they saying it...evolved??? Reply
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