How the West waited 20 years to use Tu Youyuo's Nobel prize-winning malaria discovery

The scientist told the World Health Organisation about qinghaosu in 1982, but it was decades before the West was ready to accept the plant which had been used for centuries in Chinese remedies. In 2004, Tu spoke to Didi Kirsten Tatlow about the personal sacrifices she had made to reduce malaria's deadly toll by millions.

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