If I picked everyone wearing yellow trousers, 90% of them will be vaccinated because 90% of everyone is vaccinated. See? It does not matter what set you pick 90% of will be vaccinated. That includes 90% of those wearing a Tie or 90% of those coughing. The Set makes no difference 90% of it will be vaccinated.
"But how will you know? Have you got any data for recent days or weeks for example or are you just guessing. I think it will now be something more like 50% single or double vaccinated but lower for boosted, but have no data either " - Ok lets use Algebra, shall we, lets say the percentage is N then N% of those tested will be vaccinated, See? 90% of people over 11 have had at least 1 jab, thus in any group 90% of those tested will have had at least 1 jab. That's the point, of course those numbers change as more and more got jabbed. I'm not trying to pin point an exact percentage over the curve of vaccinations, that would take Differentiation, I initially made the point that if N% are vaccinated then N% of those tested positive will be vaccinated.
I had no idea I'd joined a site where the clientele are so innumerate.