I caught a few points on this thread.
So just to be clear, herd immunity is a very important way of dealing with a disease. The crucial question is how you get there. The controversy was over what appeared to be the strategy of achieving it rhough letting the disease rampage unchecked through the population. Obviously an absurd idea and they seem to be getting nearer to that in Brazil through their inept leader. Well not quite but pretty bad.
Getting to herd immunity through vaccination is the main way of achieving protection. If an effective vaccine (that prevents serious cases of the disease and that lasts 12 months at least) cannot be found then it will remain a very serious disease, and we will then have to rely on treatments, again to minimise the need for ventilation and deaths.
I agree when the antibody tests are more widely available this will be illuminating! They are currently only very limited, presumably because they need to be manufactured in very large quantities. Here is more information:
https://www.gov.uk/government/publications/coronavirus-covid-19-antibody-tests/coronavirus-covid-19-antibody-testsFinally, over 70's have never had to isolate, but as vulnerable ( not clinically extremely vulnerable) they had and still have to take particular care over observing the lockdown rules and adhering to social distancing etc. Nor was it ever illegal specifically for over 70's to go out in the sense that the same rules (and legal framework) applied to all of us except for those of all ages who were/are "shielding". Not even sure if it was illegal for the shielders to go out but strongly recommended for their own protection?
Goods from China (and other countries). So?
Hurdity x