What are mRNA vaccines and how useful will they be?

What are mRNA vaccines and how useful will they be?

By Michael Le Page

An artist’s representation of a T-cell (blue) attacking the new coronavirusIliescu Catalin/Alamy
A collective wave of excitement swept around the world when Pfizer and BioNTech announced positive early results from their coronavirus vaccine trial last week. Now, biotechnology firm Moderna has announced even better findings. These are no ordinary vaccines: they could be the first messenger RNA (mRNA) vaccines to be approved. If this technology lives up to its promise, it could bring huge benefits for healthcare, not just for tackling the coronavirus.
“Part of the reason why the results from Pfizer are so exciting is that nobody has ever shown in humans …

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