AstraZeneca and others should not own a lucrative patent on a medicine that is needed by poor as well as rich nations
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• Helen Clark is a former prime minister of New Zealand and Winnie Byanyima is UN undersecretary general
To bring an end to the pandemic, the world needs a vaccine. Promising early trial results for the vaccine developed by Oxford University suggest we’re inching closer to discovering one.
Related: Oxford offers best hope for Covid-19 vaccine this year, MPs told
