The U.S. appears to be reaching its ceiling on COVID-19 vaccinations, at least among adults.
Why it matters:The more transmissible and dangerous variant Delta variant is spreading fast, and experts fear another wave of infections among the unvaccinated.
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https://www.axios.com/america-is-hitting-its-vaccination-ceiling-0d896b5f-a18b-4978-8d13-e5da2a3d97af.html
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