Nervardia | Were they rushed??? @Nervardia | Uploaded May 2021 | Updated October 2024, 6 hours ago.
Sources:

pbs.org/newshour/health/years-of-research-laid-groundwork-for-speedy-covid-19-vaccines
statnews.com/2020/11/10/the-story-of-mrna-how-a-once-dismissed-idea-became-a-leading-technology-in-the-covid-vaccine-race

And basically The Skeptic's Guide to the Universe podcast. Seriously. Listen to it.
theskepticsguide.org/podcasts

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