Why don't we have more vaccines?

A lot of informed speculation, but we could use clear answers

Hey guys. Today, after many long months of closure plus a surprise day off yesterday for the snow, my kid is finally back in school for in-person kindergarten. I’m a little nervous, but fundamentally it feels good.

But of course, what I really want is for myself and my wife and all of our friends and family to get vaccinated, wh…

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