Read the book "Dr Mary's Monkey" by Edward T. Haslam and Jim Marrs, it tells all about the contamination of the polio vaccine and much more. Scary. Its a really well researched, interesting book.

https://www.ncbi.nlm.nih.gov/pubmed/11205211 Here is a peer reviewed study backing up info on sv40

That's really not hard to believe because of who controls the whole immunization bullshit / we know they want at least 2/3 us of us all dead

A google search on the title does bring up a lot of results that appear to go into detail on the topic.