A Kenyan health care worker prepares to administer a dose of the Oxford/AstraZeneca Covid-19 vaccine. Many poorer countries are far behind Western nations in their roll-out programmes, being unable to purchase vaccines at the same scale and price. Photo: EPA-EFE
A Kenyan health care worker prepares to administer a dose of the Oxford/AstraZeneca Covid-19 vaccine. Many poorer countries are far behind Western nations in their roll-out programmes, being unable to purchase vaccines at the same scale and price. Photo: EPA-EFE