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Halting progress and happy accidents: How mRNA vaccines were made

By Gina Kolata and Benjamin Mueller
New York Times·
14 mins to read

The stunning Covid vaccines manufactured by Pfizer-BioNTech and Moderna drew upon long-buried discoveries made in the hopes of ending past epidemics.

Thousands of miles from Dr. Barney Graham's lab in Bethesda, Maryland, a frightening new

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