What the COVID-19 vaccine owes to Dr. Jonas Salk and the end of 'polio season'
As the coronavirus vaccine goes into the arms of Americans, it's worth pausing to consider the trailblazing polio vaccine trial that made it possible.
from USATODAY - News Top Stories https://ift.tt/3nQftCr
As the coronavirus vaccine goes into the arms of Americans, it's worth pausing to consider the trailblazing polio vaccine trial that made it possible.
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