Researchers detected high levels of DNA impurities, including SV40 promoter sequences, in Pfizer and Moderna COVID-19 mRNA vaccines, exceeding safety limits. Researchers found high levels of DNA in Pfizer and Moderna vaccines, far exceeding regulatory safety thresholds. Contaminants like the SV40 promoter, known to cause cancer in lab animals, were identified in Pfizer vaccines but not in Moderna’s. Plasmid DNA from E. coli used in manufacturing did not fully eliminate residual DNA, posing potential risks. Health authorities like the CDC claim no DNA integration issues, despite mounting evidence to the contrary.