mRNA COVID-19 Vaccine Anaphylaxis: Epidemiology, Risk Factors, and Evaluation
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9869308/

Recent Findings
Although initial reports emphasized a high risk of anaphylaxis to the COVID-19 vaccines, more recent data demonstrate similar rates of anaphylaxis to the COVID-19 vaccines as to other vaccines. Alternative explanations for increased rates of apparent allergic reactions are discussed, including the role for stress-related and nocebo responses.