After reading more about the causes of Polio - heavy metal induced damage in the guts, leading to opportunistic infections near the spine - I was already skeptical about older vaccines.
I saw this graph. I will have to dig more into the data, specifically when modern plumbing was introduced in the areas where this data is from.....
...but this has just turned me off completely from vaccines.
The only vaccines that are still on my good list: Rabies, Tetanus, Malaria, Hepatitis
I will have to take a look at each of them in detail.