Now that Sinovac Biotech’s vaccine has proven effective, passing late-stage trials in Brazil, with more than 300 million doses sold to middle-income and poor nations, China should switch instead to organising a free global vaccine project, government-aided and funded for all the nations that need it.

I suggest that China’s project should promise free vaccines and vaccinations, with no ancillary transport or transaction costs, to all nations where income per head (in United Nations’ normal…

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