evidence: In a bulletin posted Wednesday on the Florida Department of Health's website, Ladapo raised concerns about "nucleic acid contaminants" found in the approved Pfizer and Moderna COVID-19 vaccines. He claimed this could deliver "contaminant DNA" into human cells and also raised concerns about cancer risk. [...] Anti-vaxxers call this "turbo cancer" — which doesn't exist, Gounder said. [...] "DNA vaccines have never been associated with cancer development despite delivering orders of magnitude more DNA than is present as a contaminant in mRNA vaccines," she says. "Trace amounts of DNA are present in pretty much every biologic used in medicine that is made in cell cultures, including monoclonal antibodies, some of which are used as cancer therapies. There will also be some trace levels of DNA in the other COVID vaccines, because they are made in cell cultures."