What is SV40 and is it causing cancer?
Claims that COVID vaccines cause cancer via SV40 DNA are false; SV40 promoter genes used in mRNA vaccines do not contain cancer-causing sequences and are removed during production.
SV40 again
There is no credible evidence that mRNA COVID vaccines contain the cancer-causing SV40 virus, despite recent claims.
Do COVID vaccines cause cancer 17 different ways?
COVID vaccines do not cause cancer. A cited South Korean study was retrospective, not causal. The SV40 promoter flagged is a removed lab tool.
Correcting this week’s misinformation: week of February 19, 2026
This week's debunks: claims vaccines are unsafe, polio came from DDT, and COVID shots contain cancer-causing SV40. None hold up.
Do COVID vaccines contain cancer ingredients?
A tweet shared far and wide claims that COVID vaccines are made with SV40, which causes cancer.
Are COVID vaccines unsafe and fraudulent?
Bret Weinstein claims COVID vaccines differ from trials and may cause cancer. We break down the facts on manufacturing, safety, and SV40 DNA concerns.
Do COVID-19 vaccines cause cancer?
COVID-19 vaccines do not cause cancer. Manufacturing removes SV40 DNA, and epidemiological data show no increase in cancer linked to vaccination.
Do COVID vaccines have cancer-causing DNA?
We investigate claims about COVID vaccines containing cancer-linked DNA, explaining how rigorous safety standards ensure no risk from manufacturing processes.
Do COVID vaccines contain secret DNA?
Claims that COVID vaccines contain cancer-causing DNA are false. SV40 promoters are used in manufacturing but are not present in final vaccines.
Is DNA hidden in vaccines causing cancer?
Claims that COVID vaccines contain harmful DNA linked to cancer are unfounded; studies show no increased cancer risk, and any detected DNA is due to improper handling and not present in effective doses.
