Pretty concerned.
The virus is mutating and although the vaccine currently available might cover THIS mutated strain, that by no means guarantees it will cover the NEXT mutated strain.
Getting everyone vaccinated as soon as possible is very important but given how greedy the UK is with their borders and we normally wait for countries to not let us in rather than the other way round for COVID-19, and the lack of border-control and strict quaratine protocol for newcomers to the country, I can't help but feel without a world-wide vaccination program, we're surely all just waiting for it to mutate in some other area of the globe and then once againe exponentially spread amongst ourselves.
I hope I'm wrong.