So just like any other illness, the most vulnerable will need to take care and be aware of the additional risks as a result of their condition / treatment?No, I’m saying that 4 million people are classified as Clinically Extremely vulnerable (source https://www.bmj.com/content/372/bmj.n467); this means they are more likely to suffer from Covid if infected.
Most will be vaccinated, but because the effectiveness of the vaccine is not 100%, that means some will still catch it, and because they are more vulnerable they are more likely to end up in Hospital than those who are not CEV. A study released earlier this week shows that the vaccine (first dose) is less effective in those undergoing cancer treatment, for example. Source https://www.bbc.co.uk/news/health-56351084
What I am saying, is that the Government will take this into account when deciding what to do with restrictions, and particularly later in the year with social distancing / face coverings etc. They may ask this group to take extra precautions, although I’d expect many of them to do that anyway. Whether Governemnt asks the rest of the population to take some precautions on behalf of these 4 million people is of course a matter for them.