Immunization Safety Committee Says SV40 Evidence
'Moderate' to 'Strong'

Committee, however, finds evidence inadequate
to accept or reject SV40 causation, says threat isn't significant

photo-1A committee of the Institutes of Medicine assigned to investigate the safety of certain immunizations has concluded that there is at least moderate evidence indicating that exposure to SV40 from contaminated polio vaccines could lead to human cancer.

After nearly three months of consideration, the Institutes of Medicine's Immunization Safety Review Committee on Oct. 22 released its report on SV40 and cancer. In July, the committee heard testimony about the apparent link between SV40 and certain rare …