I'm perfectly okay with the vaccines, but I've noticed some people are worried due to news reports of adverse reactions.
Here's an article discussing the possible role of polyethylene glycol (PEG) in the RARE (6 out of 272,001) allergic reactions to the COVID-19 vaccines.
>>>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 of the particles and increase their stability and life span. . . .
Szebeni says the mechanism behind PEG-conjugated anaphylaxis is relatively unknown because it does not involve immunoglobulin E (IgE), the antibody type that causes classical allergic reactions. (That’s why he prefers to call them “anaphylactoid” reactions.) Instead, PEG triggers two other classes of antibodies, immunoglobulin M (IgM) and immunoglobulin G (IgG), involved in a branch of the body’s innate immunity called the complement system, which Szebeni has spent decades studying in a pig model he developed. . . .
Other scientists, meanwhile, are not convinced PEG is involved at all. “There is a lot of exaggeration when it comes to the risk of PEGs and CARPA,” says Moein Moghimi, a nanomedicine researcher at Newcastle University who suspects a more conventional mechanism is causing the reactions. “You are technically delivering an adjuvant at the injection site to excite the local immune system. It happens that some people get too much excitement, because they have a relatively high number of local immune cells.”<<<
https://www.sciencemag.org/news/2020/12/suspicions-grow-nanoparticles-pfizer-s-covid-19-vaccine-trigger-rare-allergic-reactions
According to this article, epinephrine is the only effective treatment for anaphylaxis:
>>>People may wonder if they should administer epinephrine if they suspect — but aren’t sure — that they are having an anaphylactic reaction. The answer is yes. Epinephrine should be administered without delay if there is any concern or suspicion of anaphylaxis, because the risk of an untreated severe allergic reaction outweighs the risk of inappropriately receiving epinephrine.<<<
Many people have experienced mild allergic reactions to a food, medication, or other allergen, but a severe reaction can be harmful or even fatal. Anaphylaxis must be treated with epinephrine as qu...
www.health.harvard.edu