CDC Admits 98 Million Americans Received Polio Vaccine In An 8-Year Span When It Was Contaminated With Cancer Causing Virus

Via: Prevent Disease:

The CDC has quickly removed a page from their website, which is now cached here, admitting that more than 98 million Americans received one or more doses of polio vaccine within an 8-year span from 1955-1963 when a proportion of the vaccine was contaminated with a cancer causing polyomavirus called SV40. It has been estimated that 10-30 million Americans could have received an SV40 contaminated dose of the vaccine.
SV40 is an abbreviation for Simian vacuolating virus 40 or Simian virus 40, a polyomavirus that is found in both monkeys and humans. Like other polyomaviruses, SV40 is a DNA virus that has been found to cause tumors and cancer.
SV40 is believed to suppress the transcriptional properties of the tumor-suppressing genes in humans through the SV40 Large T-antigen and SV40 Small T-antigen. Mutated genes may contribute to uncontrolled cellular proliferation, leading to cancer.