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Do you (or anyone else on HN) know why mRNA vaccines haven't been used before COVID? Are they more useful against coronavirii? Or is it just that existing vacci
by Rebelgecko 6y ago
Do you (or anyone else on HN) know why mRNA vaccines haven't been used before COVID? Are they more useful against coronavirii? Or is it just that existing vaccines are good enough, so no one has bothered releasing an mRNA vaccine for the mumps or whatever?