A certain element of the population will be at risk. Note that the UK does not intend to vaccinate the total population and Jonathan Van Tam stated yesterday that once the high risk population has been vaccinated then he expects both hospitalisations and deaths to fall by 99%. At that point, Covid 19 largely becomes an inconvenience rather than a killer. To back up my previous point, my daughter is a nurse. She and her colleagues are being vaccinated to protect their patients rather than themselves.