[jjcon]

Stupid question - why will a coronavirus vaccine take so long even when they say people are working at an incredible pace if we can produce a new flu vaccine each year? Are scientists guessing strains multiple years in advance so there is time to produce a vaccine or something?

[KaiserPro]

Its not stupid. Its a new vaccine, to treat a new virus thats is in a class of virus thats never had a vaccine.

if that makes any sense?

the yearly flu vaccines are tweaks to an already understood vaccine, (minor releases) Sometimes there are major releases but thats for a jab that targets a different class of flu (h5n1 vs h1n2)

this is an entirely new vaccine, for a virus that has never had a vaccine, so its more like a v1.0 release on a new platform.

[selectodude]

The flu vaccine is simply deactivated flu virus that is grown in eggs. The big issue here is that coronavirus is “smart” enough to not reproduce in eggs.