evidence: According to the anti-vaccine disinformation, the myth about the polio vaccine and cancer started when the CDC supposedly admitted that 98 million Americans received the polio vaccine during an 8-year span when it was contaminated with a cancer virus. Other websites essentially repeated the same nonsense. And it’s in the lyrics of a rap song (seriously, the stuff people send me continues to amaze me). [...] - Polio vaccines were contaminated with the SV40 virus (known as Simian virus 40, a polyomavirus that is found in both monkeys and humans), - SV40 causes cancer, - The CDC admits that 98 million Americans are at significant risk of SV40 infection and thus cancer. [...] Lastly, and most importantly, the claim that "98 million" might catch cancer from the polio vaccine sounds like an incredibly scary story. The number is ultimately inaccurate, a tactic employed by the anti-vaccine religion whenever it suits their needs to establish the dangers of vaccines. In other words, facts are damned, let’s say whatever sounds truly spine-chilling.