Polio Vaccine contaminated with simian virus (SV40): Link to causing

From 1955 – 1963 10% - 30% of polio vaccines were contaminated with SV40. Certain Cancers, bone, brain, blood and mesothelioma have been possibly linked to SV40. The US institute of Medicine doubts this link is real. Current polio vaccine is SV40 free.

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April 14, 2003