A vaccine is many months away and is, of course, also a form of herd immunity in itself. The lockdown strategy is all about slowing the rate of infection to levels manageable by the NHS. Don’t fool yourself into thinking it’s about anything more than containment until we can achieve herd immunity or find some other effective treatment.
I'm not fooling myself. I just don't see an easy way out currently.
I have heard much talk about shielding the vulnerable lately, which as far as I can see is anyone over 60 or with a condition that makes them more likely to be seriously ill (or die) from the virus.
Even if that is possible and long term it sounds really difficult to sustain, the health service is still going to be at full stretch if the rest of the population is let out of lockdown in some way. The virus really is not that predictable and we would still be suffering huge numbers ill and dying in the lower age groups, with the strain that will put on the NHS - not to mention the add on deaths from the postponement of cancer treatments and all the other diseases we also need to be focusing on.
Having read all that, I think what I am trying to say is that unless we get a vaccine or efficient treatment of the symptoms by medication then we are fucked.