What we know about Moderna's coronavirus vaccine and how it differs from Pfizer's
Both vaccines rely on mRNA to work, although with slightly different structures & makeup.
Moderna's coronavirus vaccine candidate is similar to the Pfizer-BioNTech vaccine that was authorized and shipped out to the first Americans earlier this week.
But there are a few key differences. Most importantly, Moderna's vaccine can be stored in normal freezers and does not require a super-cold transportation network, making it more accessible for smaller facilities and local communities.
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