I posted 2 articles. One of them goes into details about vaccines and how they work.
I'm gonna go out on a limb and say you didn't read it before replying.
It's true about side effects, they may or may not happen, but in the case of Covid-19 vaccines, there are no studies yet to really determine what those are.
And interestingly enough, Sars vaccine was never approved.
It's not like mRNA technology is brand new. It was discovered 60 years ago. What is new, is their application has until recently been restricted by the instability and inefficient
in vivo delivery (which refers to studies in animal models or human clinical trials) of mRNA. Recent technological advances have now largely overcome these issues, and multiple mRNA vaccine platforms against infectious diseases and several types of cancer have demonstrated encouraging results in both animal models and humans.
Both SARS-COV and MERS-COV infection died out as their transmission rate is less and they were easily contained compared to COVID-19.
On one hand, you could say there's no long term studies on the effects of the COVID-19 vaccine. On the other hand, there's pretty good evidence of the effect of COVID-19 virus. And I'm not just talking about death. Lots of other people have had wide ranging short and long health effects from the virus.