SUMMARY: mRNA COVID vaccines, previously not used outside of small laboratory animal studies, were given to billions of people after perfunctory and rushed clinical trials. As scientists learned in 2022, mRNA vaccines cause a ‘class switch’ to IgG4 antibodies. Another study found that this specific antibody subclass is associated with more aggressive cancer growth and causes hyperprogressive cancer disease in mice and humans.

https://www.igor-chudov.com/p/hyperprogressive-cancers-due-to-covid