Based on this (not necessarily random sample), the CDC generally estimates that 40-55% of the U.S. population showed immunity to Covid-19 by mid March of 2021.
Source: CDC COVID Data Tracker
Business, Tech, Energy, Transportation
Based on this (not necessarily random sample), the CDC generally estimates that 40-55% of the U.S. population showed immunity to Covid-19 by mid March of 2021.
Source: CDC COVID Data Tracker
