Tag Archives: Simian Virus 40

Vaccine Myth #12: The Polio Virus Vaccine Is Contaminated with a Virus That Causes Cancer

Early batches of poliovirus vaccine used in the late 1950s and early 1960s were contaminated with a monkey virus called Simian Virus 40, or SV40. Recently an investigator found proteins made by SV40 virus in unusual tumors in adults. The studies … Continue reading

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