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Article: Legal Documents Raise Question of Whether Polio Vaccines Remained Tainted With SV40 After 1961, HarrisMartin Reports.
- Article from:
- PR Newswire
- Article date:
- December 13, 2000
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WEST CHESTER, Pa., Dec. 12 /PRNewswire/ --
The author of a paper set to appear later this month in a cancer research journal says there is reason to doubt claims that oral polio vaccines distributed in recent decades were free of simian virus 40 (SV40), HarrisMartin Publishing reports.
Philadelphia Attorney Stanley P. Kops writes in an upcoming issue of Anticancer Research that legal testimony and internal documents from at least one drug maker should cause researchers to question whether oral polio vaccine lots manufactured since the early 1960s were contaminated with the monkey virus.
Following reports in the late 1950s that polio vaccines ...