ok lets clear up the inaccuracies
1. the pfizer vaccine is not taking the rna of the neucleus(central part that tells a cell what to replicate)
2. the pfizer vaccine is taking rna from the spikey shell that 'knocks on door' of a cell asking to be let in
3. the 90% is not 90% of all 22k vaccine participants
the 90% is based on this
44k total participants .. 22k had the vaccine 22k had a placeblo
out of all 44k so far only ~95 people then got covid. where ~85 were in the placebo group and 9 were in the vaccine group
so the ASSUMPTION is that the 2 groups should have had same risk of getting covid. and by a placebo group having 85 cases and vaccine group only having 9. they judge it as a v9:85p thus 90% effectivity
but these numbers are based on only 100 of the 44k being exposed to covid. meaning its too early to actually know
Do you mean 100 were initially for sure exposed to covid in sufficient dose to certainly infect non vaccinated people?
Maybe better to have dosed the entire sample with covid and see the difference?
I will try to read about the entire experiment more deeply.
The 90% seems a open to a few factors that were not controlled and could have contributed to the difference between the groups other than the vaccine. Then again I'm not clear on the conditions or duration of experient. Will have look.