Topcat23. You might want to read this
“ If fully vaccinated, the risk of being hospitalised falls by about 90%,” said Prof David Spiegelhalter, chair of the Winton Centre for Risk and Evidence Communication, at Cambridge University. “But it doesn’t disappear, and as a large proportion of the highest risk people are now vaccinated it’s inevitable they will start to form the majority of the people with Covid in hospital, particularly as most of the unvaccinated people are young and therefore at low risk. Indeed, being young reduces the risk even more than being vaccinated.”
Another big factor at play is age. McConway says the risk of an infected person being hospitalised is at least 10 times, and as much as 25 times greater, for a 75-year-old than a 25-year-old. If the latter risk is on the mark, then a vaccine that prevents 96% of hospitalisations would slash admissions among 75-year-olds to that seen in those 50 years younger.
When it comes to deaths from Covid a fully vaccinated 80-year-old has a similar risk to an unvaccinated 50-year-old.
Future twists and turns in the pandemic may yet change the mathematics. Having a large wave of infections with roughly half the UK population vaccinated provides ripe conditions for a variant that can better evade the protection of vaccines.