The safety and efficacy analysis of the vaccine was based on 32,449 participants in a phase 3 trial.
Source: AstraZeneca Covid vaccine 79% effective in U.S. trial
Opinion: Factfulness, Skepticism & Realism, Sometimes satire and parody.
The safety and efficacy analysis of the vaccine was based on 32,449 participants in a phase 3 trial.
Source: AstraZeneca Covid vaccine 79% effective in U.S. trial