Good results of the Pfizer vaccine have spread cheer across the world. Some other vaccines also look promising, and large-scale vaccination of at least health staff and other at-risk people could begin soon. Yet, experts say it could take four years to immunise the world against the coronavirus. That’s because rich countries have already reserved billions of doses – equal to more than a year’s supply – of vaccines for their citizens, leaving little for the world’s poor.
The US alone has bought nearly a sixth of the world’s supply and Canada has secured enough doses to inoculate each citizen nine times. With 1.6 billion doses, India is the number 1 advance buyer, but it averages out to just over 1 dose per person.