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Didn't they make the vaccine in few days? It just took 10 months or so to get it approved
SARS an MARS viruses and vaccines are not new, they have been researched for probably 40-50 years
Exactly, Covid is a variant of a pretty well known class of virusses. The research on mRNA vaccines was pretty advanced as far as I gathered but testing them in trials isn't something you can easily do. There's a lot of hoops to jump through to justify trials with human subjects. When the burden of disease isn't very impactful it's hard to justify trials. Once covid came screeching around the corner suddenly the justification was easy to argue.
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