What proportion of the US has some immunity to COVID— where the immune system is not totally caught by surprise?
215 million have received at least 1 dose of vaccine.
40-60 million of the rest likely have had COVID.
That still leaves 60-80 million who are very susceptible.
215 million have received at least 1 dose of vaccine.
40-60 million of the rest likely have had COVID.
That still leaves 60-80 million who are very susceptible.
The true number at risk of severe COVID is hard to estimate because some people who have been vaccinated or have had COVID may not have adequate protective immunity due to underlying comorbidities like cancer or other immunosuppressive disorder.
The unvaccinated include 50 million not yet eligible for vaccination. If a vaccine approval comes, this number will come down.
I didn't use the word herd immunity because unfortunately this virus has thrown a lot of surprises at us. Time alone will tell.
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