mRNA VXINES: Polyethylene glycol (PEG), the polymer of choice for gene-editing, is a polyether compound derived from petroleum. PEG is very sensitive to sonolytic (ultrasound) degradation & PEG degradation products can be TOXIC TO MAMMALIAN CELLS.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4527952/

"PEG has never been used before in an approved vaccine, but it is found in many drugs that have occasionally triggered anaphylaxis—a potentially life-threatening reaction that can cause rashes, a plummeting blood pressure, shortness of breath, and a fast heartbeat."

"Some allergists and immunologists believe a small number of people previously exposed to PEG may have high levels of antibodies against PEG, putting them at risk of an anaphylactic reaction to the vaccine."

"Pfizer’s and Moderna’s clinical trials of the vaccines, excluded people with a history of allergies to components of the COVID-19 vaccines; Pfizer also excluded those who previously had a severe adverse reaction from any vaccine."

"The two vaccines both contain mRNA wrapped in lipid nanoparticles (LNPs) that help carry it to human cells but also act as an adjuvant, a vaccine ingredient that bolsters the immune response. The LNPs are “PEGylated”—chemically attached to PEG molecules that cover the outside"

"72% of people have some antibodies against PEGs, according to a 2016 study by Samuel Lai, University of North Carolina, Chapel Hill, presumably as a result of exposure to cosmetics & pharmaceuticals. 7% have a level high enough to predispose them to anaphylactic reactions"

"Nanoparticle-based medicines, often PEGylated, are mistakenly recognized by the immune system as viruses.
Szebeni believes CARPA [complement activation-related pseudoallergy] explains the severe anaphylactoid reactions some PEGylated drugs are occasionally known to cause."

"In a stock market prospectus filed on 6 December 2018, Moderna acknowledged the possibility of “reactions to the PEG from some lipids or PEG otherwise associated with the LNP.”

"And in a September paper, BioNTech researchers proposed an alternative to PEG for therapeutic mRNA delivery, noting: “The PEGylation of nanoparticles can also have substantial disadvantages concerning activity and safety.’”

"Both mRNA vaccines require two shots, and he worries anti-PEG antibodies triggered by the first shot could increase the risk of an allergic reaction to the second or to PEGylated drugs."

"people who might be at high risk of an anaphylactic reaction should stay at the vaccination site for 30 minutes after their shot so they can be treated if necessary. “At least [anaphylaxis] is something that happens quickly”... https://www.sciencemag.org/news/2020/12/suspicions-grow-nanoparticles-pfizer-s-covid-19-vaccine-trigger-rare-allergic-reactions