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Where the Rumor Came From
The claim appears to stem from misinterpretations of scientific discussions about vaccine ingredients and poorly understood laboratory studies. Some posts refer to DNA fragments used in vaccine manufacturing, such as short sections of SV40 DNA, and incorrectly suggest these fragments cause cancer. However:
- These DNA pieces are non‑infectious and present only in very small amounts used in vaccine production — not in the final vaccine itself in harmful quantities.
- Experts and regulators emphasize that residual DNA does not integrate into human DNA or cause cancer.
