The data for age group specific data is available freely in the UK. I did a quick analysis in R, and even though all over 75 and most over 70 have been vaccinated, I didn't see any increase in the rate of descent compared to other age groups. So not quite having a public health impact in overall numbers just yet (it's the lockdown that is doing that), but I have no doubt it will eventually. I wonder if part of it is that people are more willing to abide by the rules, now that we have possible way out of it.
Yes, some areas are at different stages of the vaccine rollout. One jab provides excellent protection. 10 days after the pfizer jab gives you around 90-95% protection. Most of my colleagues who are more knowledgeable on vaccine science feel that a 12 week gap will provide better overall immunity - most vaccines are given months apart for boosters. The 3 week gap of the trial was likely a design constraint of rushed trials.
> So not quite having a public health impact in overall numbers just yet (it's the lockdown that is doing that), but I have no doubt it will eventually.
I guess to the extent that people are actually following the lockdown rules, that substitutes pretty well for a vaccinated population. The advantage of vaccination (at least in theory) is that you can maintain those rates without being locked down.
