COVID-19: Pfizer and BioNTech commence pivotal Phase 2/3 global study
NEW YORK: Pfizer Inc. and BioNTech SE announced the start of a global (except for China) Phase 2/3 safety and efficacy clinical study to evaluate a single nucleoside-modified messenger RNA (modRNA) candidate from their BNT162 mRNA-based vaccine program against SARS-CoV-2….