CDC Admits as Many as 30 Million Americans Could be at Risk for Cancer Due to Polio Vaccine

Do vaccines cause cancer? Well Straight from the horses mouth, The CDC says it just may be so … but after 50 years they state more studies are needed (REALLY?).

The Centers for Disease Control and Prevention (CDC) posts on its own website the concern that as many as 30 million Americans could be at risk for cancer after receiving a Polio vaccination during the 1955 – 1963 time frame. This possibility exists because the vaccine in question was found to be contaminated with the SV40 virus. Most Americans received multiple doses of this vaccine that was administered to almost 100 million people.




CDC link:


Frequently Asked Questions about Cancer, Simian Virus 40 (SV40), and Polio Vaccine

SV40 is a virus found in some species of monkey. Soon after its discovery in 1960, SV40 was found in polio vaccine. More than 98 million Americans received one or more doses of polio vaccine during the period (1955–1963) when some of the vaccine was contaminated with SV40. SV40 has been found in certain types of human cancers, but it has not been determined that SV40 causes these cancers. The majority of evidence suggests there is no causal relationship between receipt of SV40-contaminated vaccine and cancer; however, some research results are conflicting and more studies are needed. For more information, see the fact sheet.
•What is SV40?
•Why is there so much interest in SV40?
•Does polio vaccine being given in the U.S. today contain SV40?
•What about concerns that the testing methods used to screen oral polio vaccines could have missed certain strains of SV40?

•Who received SV40-contaminated polio vaccine?
10–30 million of the 98 million people who received a polio shot actually received a vaccine that contained SV40

•Were any other people in the U.S. possibly exposed to SV40-contaminated vaccines?
•Is receiving contaminated vaccine the only way to become infected with SV40?
•SV40 is known to cause tumors in rodents. Have research studies found an association between SV40 and cancer in humans?
Yes. An association has been found between SV40 and certain types of cancer in humans.

•What steps have been taken by the government to see if SV40-contaminated vaccines affected people’s health?
•What has research found regarding the health effects of receiving SV40-contaminated vaccine?
•Have research studies looked at the risk of cancer in children whose mothers received SV40-contaminated polio vaccine?
•If I have one of these cancers, does it mean that SV40 caused it?
•Can I obtain a test to see if I am infected with SV40?
•What should I do if I received polio vaccine during 1955–1963?
•Where can I get more information about SV40?

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