[random32840]

Cambridge recently released a study estimating that 9% or so of the UK population already have antibodies. You only need to get to ~60% and (assuming it doesn't become endemic) you have herd immunity, it doesn't matter that the virus is here to stay.

[pvaldes]

We don't even know still if immunity would last for more than a couple of months, it seems that would be a short duration issue in any case, so the herd immunity plan has some loopholes on it.

[oxfordmale]

There is a paper (not peer reviewed) that suggests that herd immunity starts occurring around 20% as long as mass gatherings remain are banned. If true life could go back to normal a lot quicker.