You should google "the Cutter incident".
Maybe all ten children killed in the Cutter incident had pre-existing conditions. Most people have a pre-existing condition of some sort or another. It was an effort to inoculate generally, so that's why I used the death rate of COVID in the general population as a comparison.
> Only 10 in 200,000 died from a vaccine
This doesn't negate the fact that vaccines can be dangerous. This just happens to be the number for that particular vaccine.
> 10 in 200,000 deaths is better than 1 in 100
The 10 could have been fine without the vaccine. Who knows, it's just speculation; maybe they had pre-existing conditions, maybe they did not. But comparing numbers like this knowing that the 10 in 200,000 are drawn from a different population from the 1 in 100 is being disingenuous.
The people getting the Polio vaccine (children) were the general population of people at highest risk of death by polio. The same is true for the Covid vaccine, at least for the next few months. Both are mass vaccination campaigns.