It's still early days for the Pfizer, Moderna and other vaccines, and the COVID virus keeps mutating, but it's still worth celebrating the progress to date.
First, a layman's primer on mRNA
a more technical discussion with virologist Shane Crotty
Next, the logistics of distributing the vaccines, especially the challenges posed by the Pfizer COVID vaccine which needs to be stored at below -70 F throughout the cold chain
Finally, here is CBS 60 minutes episode last night about how Pfizer and BioNtech developed the vaccine so rapidly
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