Every vaccine bought for the UK stockpile since the summer has been on the assumption that just 30 million people – less than half the population – will get it.

With such low coverage, the virus would continue to spread and some form of social distancing would still be needed

https://news.sky.com/story/coronavirus-uk-only-buying-enough-vaccines-to-protect-the-most-vulnerable-12116971

Photo by CDC on Unsplash