DNA in Pfizer COVID-19 Vaccine Is ‘Several Hundred Times’ Over Limit: Report

Published on May 15, 2024

DNA contamination in Pfizer’s COVID-19 vaccines was found to be hundreds of times higher than permissible limits, according to a recent analysis that says this poses potential safety risks after mRNA vaccinations. The peer-reviewed commentary, published in the Methods and Protocols journal on May 8, investigated DNA contamination in Pfizer’s mRNA COVID-19 vaccine Comirnaty. DNA impurities in vaccines pose significant safety issues such as cancers, blood microclots, and autoimmune diseases. The World Health Organization (WHO) has set a DNA contamination limit of 10 nanograms (ng) DNA per dose, which is also the limit set for Comirnaty as part of its authorization....