How do we know there is no risk to the Pfizer vaccine?

We don't know "there is no risk" of ANYTHING we ingest, breathe or inject.  But we DO know the risks of not being vaccinated.

Four to eight times as many Covid victims have already died, worldwide, as compared to a normal year of flu victims.

Avoiding the long-term debilitation of surviving Covid is well worth the risk of getting the first vaccination you can find.

Everything in life has risk.  Pfizer vaccine seems not to have much.  If you have had intense allergic reaction before - I mean the kind where you have to carry an epi-pen - just wait a few minutes after the vaccine to be sure; If it starts, they can treat it easily.

Because Joe Biden and Pharma CEOs have said so.  I've never know any of these people to have lied before.

It was trialed on over 46000 people across the world.

Surely that's enough.

It's being given to the people most likely to be badly affected by the illness.

In practice there do not seem to be any common, serious, side effects.

Many vaccines cause temporary effects as their whole point is to make your body / immune system react as if you had the actual disease and force it to create antibodies to fight it; so, you can get temporary symptoms.

Everything has some risk, at all times. "Life is a terminal condition".

The single most common cause of accidental death for adults in the USA is people accidentally poisoning themselves, according to the CDC tables...

Motor vehicle accidents then falls come close second and third, totalling around 117,000 deaths per year in the US alone (2015 figures, latest available).

So watch what you are drinking and be careful where you walk! 

There is always a risk involved with any medication. 

It's why all medications need to be trialled and approved before use. 

You can be damn sure there are side affects and risk to virtually ALL medications.