As the first western country to approve the use of a Covid-19 vaccine, the UK faces a huge logistical challenge as it starts to inoculate hundreds of thousands of people this week. Every nation will of course face distribution challenges. Health experts estimate at least 9 billion doses will be required because some people will need repeat doses. Shamim Chowdhury explains how difficult it will be to end the pandemic.
Expected 2021 vaccine production won’t meet demand
