Immunity induced by Pfizer/BioNTech COVID-19 vaccine declines with time, Mayo Clinic study finds

By | September 8, 2021
In a study conducted at the Mayo Clinic, USA, scientists have investigated the long-term efficacy of the mRNA-based coronavirus disease 2019 (COVID-19) vaccine BNT162b2 (Pfizer/BioNTech) against symptomatic disease.