URGENT: Herd immunity for COVID-19 could be as low as 15%

ADDENDUM After reviewing comments here, I’ve tentatively concluded: There are two reasons to explain the resistance: (a) social distancing leading to low viral load, so the virus doesn’t reach transmissible levels, and (b) innate immunity. The key point, as Vernon Smith has pointed out, is that “the claim is that the 80% “resistance” accounts for […]