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0:40
nbcchicago.com
How Does the Pfizer BioNTech Coronavirus Vaccine Work?
The first coronavirus vaccine to roll out is being made by Pfizer and BioNTech and takes a new approach to protecting you from infection by using what is called messenger RNA or mRNA. Unlike a traditional vaccine, this new one relies on genetic code to stimulate an immune response against COVID-19. Here are the details.
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