Immune Systems Advisor

SV40, or Simian Virus 40, is a virus that was discovered in 1960 in rhesus monkey kidney cells used in the production of polio vaccines. Here's a brief overview of SV40 contamination: Background: Discovery : SV40 was found contaminating early polio vaccines, specifically those produced between 1955 and 1963, known as the inactivated polio vaccine (IPV). Source : The contamination came from the monkey kidney cells used to grow the polio virus for vaccine production. Concerns: Health Implications : There has been significant research into whether SV40 exposure via vaccines could lead to health issues in humans. Studies have linked SV40 to some forms of cancer in animals, particularly in rodents. Human Cancer : Some research has suggested a possible association between SV40 and certain human cancers like mesothelioma, brain tumors, bone cancers, and some types of lymphomas. However, this link remains controversial, with many studies finding no significant association. Response to Cont...