Earlier quoted context omitted.
> https://www.ncbi.nlm.nih.gov/books/NBK221112/ > That sounds like a load of nonsense? "Based on these limitations, the committee concludes that the evidence is inadequate to accept or reject a causal relationship between SV40-containing polio vaccines and cancer." There is literally no reason to bring this up in relation to COVID vaccines. First, this was a contamination issue with polio vaccines between 1955 and 19…
You left out the ultimate conclusion: >In light of the biological evidence supporting the theory that SV40-contamination of polio vaccines could contribute to human cancers, the committee recommends continued public health attention in the form of policy analysis, communication, and targeted biological research. >long since fixed (and unlikely to happen again, as it is now much easier to detect this kind of contamina…
Come on – this is just the standard ass-covering language in a scientific paper. "Further research is needed." By the nature of the case it's very hard to conclusively show that no-one has ever had a cancer caused by a 1960s Polio vaccine. But at present there is no good evidence that this has happened, as the paper that you linked to states very clearly.
Any medication can contain contaminants. I do not understand why you think that the mere abstract possibility that any given vaccine might contain contaminants is relevant to COVID vaccination efforts. This is like cautioning against people taking Aspirin because any given Aspirin pill might contain contaminants.