MAN has vanquished only one disease, smallpox. In 2007 Bill Gates set out to eradicate another, malaria. The World Health Organisation (who) was soon rallying its troops to the cause and a flood of money followed. $6i2m went to research in 2009 alone. This week the Bill & Melin-da Gates Foundation trumpeted another announcement: results from a phase m trial (the more extensive process of testing drugs in people) of a malaria vaccine called rts.s. This is the world's most advanced vaccine for malaria and the results, published in the New England Journal of Medicine, were encouraging.
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