To get back to vaccine effectiveness within an age-group this is the approach: Total UK pop in 30-39: 7.56 million (75.6 hundred-thousand) (chart says vaxxed

To get back to vaccine effectiveness within an age-group this is the approach: Total UK pop in 30-39: 7.56 million (75.6 hundred-thousand) (chart says vaxxed ~775/hundred-thousand unvaxxed ~750/hundred-thousand during final week) Final week infections in age-group 30-39 had 58600 in the vaxxed and 56700 in the unvaxxed. Now renormalize to the subpop (vaxxed vs unvaxxed) This age group was 76.5% vaccinated in the last week). Vaxxed infections/100k = 58600.76575.6) = 1011 Unvaxxed infections/100k = 56700(1-.765)75.6 = 3203 So if you are in this age group during the latest released week you'd be 3x more likely to be infected if you were unvaccinated.