Less than half of all American adults say they plan to get a COVID-19 vaccine when it becomes available, but halting the pandemic requires herd immunity -- achieved when an estimated 60% to 70% of the population is immune to the virus.
from WebMD Health https://www.webmd.com/lung/news/20200825/what-if-many-americans-say-no-to-a-coronavirus-vaccine?src=RSS_PUBLIC
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