“Health Canada on Thursday confirmed the presence of DNA contamination in Pfizer COVID-19 vaccines, and also confirmed that Pfizer did not disclose the contamination to the public health authority.
The DNA contamination includes the Simian Virus 40 (SV40) promoter and enhancer Pfizer did not previously disclose and that some experts say is a cancer risk due to potential integration with the human genome.”
Analyst Comment: DNA contamination in vaccines is heavily regulated as excess DNA will integrate with the human genome and can generate mutations leading to disease including cancer.