evidence: Pfizer’s updated COVID-19 vaccine, designed for the Omicron XBB.1.5 subvariant (Kraken) only differs from earlier COVID-19 vaccines in that it contains mRNA coding for the spike protein of a different SARS-CoV-2 sublineage. A clinical study of this vaccine in humans is fully enrolled, and data are expected in late 2023. [...] - Is there graphene oxide in the COVID-19 vaccine? No. Graphene oxide is not an ingredient in the Pfizer-BioNTech COVID-19 vaccine. In a document submitted to the U.S. Food and Drug Administration (FDA) titled "Structural and Biophysical Characterization of SARS-CoV-2 Spike Glycoprotein (P2 S) as a Vaccine Antigen," Pfizer indicated the use of graphene oxide during development phases to help determine the structure of the COVID-19 vaccine. However, graphene oxide it is not listed as nor has it been used as an ingredient in the vaccine itself.