sorry TG, I wasn't saying the pre-existing immunity percentage is off, I agree with the premise that it's somewhere in the 30% or more with a reasonable confidence.

what I was talking about was the 6-8 month old premise that the true cases equals 10:1 of the reported cases. isn't it reasonable to assume the 10:1 ration should be less now that there have been tens of millions of tests and theoretically millions of cases? it seemed reasonable to use the 10:1 ration way back when, when testing was just getting started but now?