As a phd-student, knowing how research work functions from the inside, I'm specially doubtfull about the covid vaccine too, a process that usually takes 4-5 years done in less than a year..under pressure and haste...I don't know..

And I say this because when you discover a vaccine, you discover a "click" with the pathogen, it works 100% of the time, not 90% or 95%..., it is not a quantitative study. Actually I would be surprised if any of them reach 80% of real efectiveness.

That's why I'm asking for any advice from official institutions and is important that info about the vaccine should be cristal clear.