Adapted Pfizer/BioNTech COVID-19 Vaccine For Omicron XBB 1.5 Subvariant Approved by MHRA An updated Pfizer/BioNTech COVID-19 vaccine focused on the Omicron XBB 1.5 subvariant has been given green light by the MHRA… September 12, 2023 · by Georgia Nica · 0
