Quote:
The CDC's five scenarios include one based on "a current best estimate about viral transmission and disease severity in the United States." That scenario assumes a "basic reproduction number" of 2.5, meaning the average carrier can be expected to infect that number of people in a population with no immunity. It assumes an overall symptomatic case fatality rate (CFR) of 0.4 percent, falling to 0.05 percent among people younger than 50 and rising to 1.3 percent among people 65 and older. For people in the middle (ages 5064), the estimated CFR is 0.2 percent.
https://reason.com/2020/05/24/the-cdcs-new-best-estimate-implies-a-covid-19-infection-fatality-rate-below-0-3/