PP,
your " 0.3% innit" @ 16:10 Mon 04th Oct 2021, is academically meaningless,
I could say according to the UK govt +ve pcr 'cases' on 29 Sept 2021 and their figure of deaths for that day, then the deaths were 0.0008% of +ve pcr 'cases' ... the sort of nonsense, statistical jiggery-pokery we have had since the pandemic began.
PP "however we know the virus circulates 'more' in the non-vaccinated"
If, you mean the unvaccinated can catch SARS-CoV-2 more easily and have a viral load longer, that MAY be true, please give some evidence.
https://www.nbcnews.com/health/health-news/vaccinated-people-are-less-likely-spread-covid-new-research-finds-n1280583 is largely another constrained, statistically anecdotal, GUESS.
"// "The large anti-vac population provide a significant breeding ground for fresh mutations."//
.... would be true (valid consistent or arguable) "
so could the partially and fully vaccinated population ... à la Marek's disease nightmare ?
"cos 'The large anti-vac population' identifies the unvaccinated population and this is where the new viruses are arising "
fool guess time again ('fool', because you should know better PP)