evidence: Claim that COVID-19 mRNA vaccines contain DNA contaminants based on study of vials of "unknown provenance"; no evidence COVID-19 mRNA vaccines can alter DNA in people [...] Michael Imperiale, a professor at the University of Michigan who studies DNA tumor viruses, told Health Feedback in an email that the results are far from establishing that DNA contamination of COVID-19 mRNA vaccines is widespread. "Since this article has not been peer reviewed, we don’t know if there was truly significant DNA contamination," he explained. [Read Imperiale’s feedback in full here.] [...] In summary, the Epoch Times article’s proposal that DNA contaminants in COVID-19 mRNA vaccines pose a risk of DNA modification and cancer isn’t substantiated by sufficient evidence. While a preprint claimed DNA contaminants were present in an alleged vial of Pfizer COVID-19 mRNA vaccine, this finding came from a vial of unknown origin. Yet this fact is glossed over and the preprint finding is discussed as conclusive evidence of contamination despite this significant limitation.