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If we ever make a covid-19 vaccine who should be first to get it?

Who will get a vaccine, and when, according to the World Health Organization’s strategy

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IT IS August 2021, and the moment the world has been waiting for has finally arrived. After many false dawns, a vaccine against covid-19 has passed all the tests and is ready to be rolled out.

It has been an arduous journey, but at last vaccine manufacturers around the world are cranking out thousands of doses a day. The end of the pandemic is on the horizon.

But this isn’t the end. It isn’t even the beginning of the end. There are more than 7.5 billion people in need …