Scientists recently discovered in Southeast Asia the first evidence of resistance to the world's most effective drugs for treating malaria, the artemisinins. Though it is ominous, that finding is hardly surprising, given the widespread misuse of the drugs (such as underdosing and failing to administer it with other antimalarials), the widespread appearance of sub-potent counterfeits, and the tendency of pathogens to develop resistance in the face of evolutionary pressure.
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