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by gatronicus 1729 days ago
> I have no idea how challenging that is.

Technically it's easy, Moderna already has multi target vaccines (for other diseases), one with 7 different targets. It can be as easy as literally creating 7 different vaccine liquids and then mixing them all in a single vial.

The problem is deciding what to put in, what ratio, possible side effects, etc... Lots of combinations which can mean lots of expensive and slow clinical trials.