J&J says booster greatly improves COVID-19 vaccine efficacy as experts await FDA decision
September 21, 2021 at 10:55 AM EDT
Johnson & Johnson became the latest COVID-19 vaccine maker to offer an update on booster doses Tuesday, when it said data from a Phase 3 trial and the real world found protection against hospitalization and death is greatly improved by a booster jab of its one-shot vaccine.
