[Carth]

Herd Immunity

Allegedly, the infection rate is falling . . how do we know that we aren't already close to it?

There are people out there who probably have the virus but no symptoms.
There are those who have/had the virus with very minor symptoms.
There are those who have/had the virus and put it down to a week with Flu.

Until everyone is tested, nobody knows who has it, has had it, and - importantly - has possibly had it twice.