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The effectiveness of a Covid-19 vaccine is the key everyone is waiting for to return to normal life after months of anguish and drama. Laboratories are racing against time to develop and manufacture a vaccine; there are several dozen in contention. However, a team of researchers just threw a stone into the pond. Endocrine disruptors like PFAS, which are present in many consumer products and in which we are all immersed, would greatly reduce the effectiveness of a vaccine.
Bisphenols, phthalates, parabens, glycol ethers, brominated flame retardants, perfluorinated and polyfluorinated compounds (PFAS), not to mention all nanoparticles or nanoadditives are all omnipresent chemicals in the objects of our daily life. They are often endocrine disruptors or suspected carcinogens if not, for the most part, proven. These components present in our body are man-made, used in many products, from non-stick pans and waterproof clothing to pizza boxes and toys. We are all carriers of these substances that can interfere with the hormonal system and are involved in a wide range of disorders and diseases ranging from obesity to low IQ, including cancers of the reproductive system. But, an aggravating circumstance, it is found at even higher levels in children. They would have more skin contact with everyday products (toys, paints, varnishes, etc.) that they put in their mouths or absorb by contact.
But scientists warn that some of these chemicals may also cause another little-known but potentially significant problem by reducing the effectiveness of some vaccines administered. This obstacle could cast a shadow over efforts to distribute a Covid-19 vaccine to enough people to ease restrictions on daily living. ” At this point, we don’t know if this will impact a corona vaccination, but it’s a risk. “Warns Philippe Grandjean, assistant professor of environmental health at the Harvard School of Public Health in an interview with the Guardian.” We should cross our fingers and hope that everything goes well “.
Philippe Grandjean is a respected scientific authority for the role he has played for several decades in raising awareness of the problem of endocrine disruptors. His recent research showed that children exposed to PFAS had drastically reduced their antibody levels after being vaccinated against tetanus and diphtheria. A follow-up study of adult healthcare professionals found similar results. Meanwhile, a certain type of substance, perfluorobutyrate (or PFBA), builds up in the lungs and can increase the severity of the disease that people infected with Covid-19 suffer from, according to another research pre-published in late October by Philippe Grandjean.
The Centers for Disease Control and Prevention and the Agency for Toxic Substances and the Disease Registry acknowledged in a statement that exposure to PFAS damages the immune system and may increase the risk of contracting Covid-19 and greater severity of the disease. infection.
Both Pfizer’s vaccine and Moderna’s vaccine are based on the genetic material of messenger RNA and it is not yet 100% certain that PFAS contamination will interfere with its efficacy in patients. Several other candidate vaccines formulated around viral protein spikes, similar to tetanus and diphtheria vaccines, may perform poorly even in people who have ingested PFAS. ” People highly exposed to these substances have a non-protective and very low antibody level after four diphtheria and tetanus vaccinations », Declared Mr. Grandjean. ” So, if a Covid vaccine is similar, PFAS is likely to inhibit the response of a vaccine “But until full data on competing vaccines are published, this is certainly a worrying hypothesis for now, but one that remains to be validated.
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