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1:59
khou.com
How Pfizer's mRNA vaccine works in the body
Doctors say the vaccine contains no live virus, so experts said you can't get COVID-19 from the shot.
Dec 9, 2020
Pfizer–BioNTech COVID-19 vaccine Pfizer Vaccine Efficacy
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The full approval of the Pfizer-BioNTech COVID-19 vaccine from the FDA could pave the way for booster shots and further employer vaccine mandates. | CBC News
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