It's more, everyone had it, the few say 20% left, then find it harder to pass between themselves as it has less people to carry it around.
They'll still get it, but the rate of infection decreases and therefore hospital needs reduce.
Can't tell what effects in the UK the lockdowns are having, slowing it for sure, but likely not much so 3 - 4 weeks till 80%.
Plus the jump from 0 - 80% is quick and a lot of people, where as the last 20% slower and 1/4 the people.
We can't pass immunity between us that's just nutso!!
