Just for clarity, that's "70% of American adults". 18% of Americans are 15 or younger [1], below the youngest approved vaccine age (the Pfizer vaccine is appro

Just for clarity, that's "70% of American adults". 18% of Americans are 15 or younger [1], below the youngest approved vaccine age (the Pfizer vaccine is approved for teenagers as young as 16), so that's (0.18 + (1-0.18) * (1-0.7) = ) ~42% of Americans who haven't even received 1 shot, and 58% who have. (There may be some error in that, if far more or far less than 70% of non-adult vaccine-eligible people (teenagers aged 16 or 17) have gotten at least one shot, but it probably doesn't change the overall percentage that much.) [1] https://www.cia.gov/the-world-factbook/field/age-structure https://www.cia.gov/the-world-factbook/field/age-structure