> given this is the first mRNA vaccine?
This is not the first mRNA vaccine, they have been using it against cancer for many years. They have had time to look for long term bad effects. If there are any they must be rare because none of been detected yet.
>Heavy metals ...
we also know when they are a problem and when not. This don't contain the bad forms. I don't even need to bother looking this up to state that confidently. The people working on this are not that stupid.
> On the other hand, we know that Covid is killing a large number of people right now.
> It doesn't
several hundred thousand dead already. And Covid is only around 9-10 months old. I didn't even get into long term effects of Covid. I personally have lost family to Covid, and have others who are having a hard time because of long term effects.
>I'm not going to ask for sources
The press release is the main one: no adverse effects noted.
I am going to wait for the science to be published before getting this (or any vaccine). However there is every reason to believe it will be good based on what we do know.