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    The Pulse-The disease defeating scientists -03Dec07-Ep6-Pt 1

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    Al Jazeera English

    by Al Jazeera English

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    Despite millions of dollars being spent on research there is no vaccine available against one of the world's biggest killer diseases -- Malaria. The Pulse looks at the parasite that has proved too complex for scientists and visits a clinical trial in Tanzania, which is showing unusual promise.