"Those at highest risk and most vulnerable are now all vaccinated"
They are? If you are referring to those on the JCVI priority list, you need to think again. Some people on that list (me for example) will not have had an opportunity for a first dose let alone a second one even by the time England has lifted significant restrictions on the 12th April.
I'm highest risk CEV etc. Second jab this Friday 9th April, but I really had to fight hard to get it brought forward, otherwise it would have been left until mid-May.
That was despite emerging data feedback on the vaccine that anyone with a suppressed immune system needs to get the second jab a lot closer to the first than the current 12 weeks, ideally no longer than 4 to 6 weeks. They've been reporting that protection is not as effective for anyone immuno- suppressed if the gap between 1st and 2nd vaccines is left much longer than that. The group I'm in wasn't included in the original vaccine trials for Pfizer or Astra, so the data about it's effectiveness could only start when the official rollout began.
The experiment continues and it's still too early to tell if the vaccines are working as well across every demographic.
I think witzend made a good point about opening everything up too early, i.e. before the most at risk have had both vaccines.
It would make sense to wait until everyone in the highest risk categories have had that second jab, but then everything else is suffering in the meantime.
There's a fair amount of crossing fingers and hoping going on.
Only time will tell. Meantime just continue to take care and stay safe, I guess.