The U.S. Food and Drug Administration (FDA) responded to concerns about billions of plasmid DNA fragments in Pfizer’s COVID-19 vaccine—as a university researcher recently testified in front of a South Carolina Senate hearing.
“The mRNA COVID-19 vaccines authorized or approved for use in the United States are not defined as a gene therapy,” the FDA told Maryanne Demasi, a former Australia Broadcasting Corporation journalist who now operates a Substack page. She noted that the FDA spokesperson didn’t answer specific questions about the DNA fragments.
Continuing, the spokesperson said that the “FDA is confident in the quality, safety, and effectiveness of these vaccines” and added that the “agency’s benefit-risk assessment and ongoing safety surveillance demonstrates that the benefits of their use outweigh their risks.”
Like the FDA’s response this week, Health Canada—a Canadian health agency—didn’t express any concern about his findings.