I know it well. Although it's true that the polio epidemic was already in decline by time the Salk vaccine was deployed in 1954, there were many 10s of thousands who were severely damaged in waves of polio in pervious decades including Franklin Roosevelt who got it in 1921 at age 39 and never walked again. I know a woman who still walks with sticks because she got it just before the vaccines were available.
The only verified polio vaccine contamination was with monkey . SV40 may cause cancer long term but does not cause acute nerve damage typical of polio so it didn't lead to people being in iron lungs or crippling. If you have other evidence from a medical journal (not some web site) please post it.
I know it well. Although it's true that the polio epidemic was already in decline by time the Salk vaccine was deployed in 1954, there were many 10s of thousands who were severely damaged in waves of polio in pervious decades including Franklin Roosevelt who got it in 1921 at age 39 and never walked again. I know a woman who still walks with sticks because she got it just before the vaccines were available.
The only verified polio vaccine contamination was with monkey [SV40 cells between 1955 and 1963](https://pubmed.ncbi.nlm.nih.gov/15322523/). SV40 may cause cancer long term but does not cause acute nerve damage typical of polio so it didn't lead to people being in iron lungs or crippling. If you have other evidence from a medical journal (not some web site) please post it.
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