From the article re: mod-mRNA. "The WHO confirms mRNA‑1018 is classified as a “mod‑mRNA” vaccine, which means it uses synthetic mRNA with nucleoside modifications (such as 1‑methylpseudouridine) instead of unmodified, naturally occurring uridine. N1-methylpseudouridine—the modified base used in mRNA vaccines—can induce ribosomal frameshifting, causing cells to produce unintended “rogue” proteins in roughly 8% of translation events and triggering immune responses to those proteins in about one-third of vaccinated individuals, introducing misdirected immune activity that experts from Oxford University and the University of Cambridge warn has “huge potential to be harmful.” "