Independent laboratories in Canada, the United States, and Europe have confirmed the presence of SV40 in Pfizer and Moderna vaccines.

Nov 7, 2026

Previously: Independent laboratories in Canada, the United States, and Europe have confirmed the presence of SV40 in Pfizer and Moderna vaccines. [Distorted]: Independent researchers, including Speicher in Canada and McKernan in the US, did report finding pieces of SV40 genetic code in vials. Their 2025 Autoimmunity paper says that SV40 promoter-enhancer fragment turned up only in the Pfizer vials, not Moderna, and it is a short DNA fragment, not the virus. Regulators such as Health Canada and Australia's regulator say the fragment is inactive leftover DNA from manufacturing, and other scientists have disputed the lab methods. Lab results finding SV40 sequences in Moderna vials, or whole SV40 virus in either vaccine, would change this verdict.

Now: Independent laboratories in Canada, the United States, and Europe have confirmed the presence of SV40 in Pfizer and Moderna vaccines. [Distorted]: Speicher, Rose and McKernan did report residual DNA findings. Their 2025 study specifically detected the SV40 promoter-enhancer target in Pfizer vials and in none of the Moderna vials tested. That is a fragment assay, not detection of whole SV40 virus or proof of cancer. It does not support McCullough's assertion that both products have SV40 for sure.

Use the researchers' actual product-specific finding and distinguish fragments from infectious virus.