A paper published December 6 on Nature reveals a new finding about the BNT162b2 vaccine, which is an mRNA vaccine against COVID-19 known as Comirnaty®, produced by BioNTech, and marketed by Pfizer. The vaccine contains a modified nucleotide called N1-methylpseudouridine (m1Ψ), which is supposed to improve the vaccine’s performance and safety. However, the paper shows…