PFIZER SAYS ITS VACCINE BOOSTER RESTORES FULL PROTECTION AGAINST COVID-19 WASHINGTON, Oct 22 — Pfizer and BioNTech announced Thursday that a large-scale trial of their COVID-19 vaccine booster showed it restored full protection against the disease, said Xinhua. In a Phase 3 randomised, controlled trial, a Pfizer-BioNTech booster dose was administered to more than 10,000...
