Real talk here; So 1% of the US population is STILL over 3.5 million people, which would be seen as a disastrously large number.

How much of the population would need to be immune for herd immunity to cut into Covid's infection rate a meaningful amount?
I mean, given how the main priority is just not overloading the medical sector, and there'll be people constantly recovering from the virus as more are infected, even a small lowerance in its growth rate should have a noticeable effect, right?