Table 1 Results from a hypothetical active-control COVID-19 vaccine trial
| Â | BNT162b2 | Experimental vaccine |
|---|---|---|
Person-years follow-up per arm | 10,000 | 10,000 |
Efficacy | 95% | 80% |
Observed COVID-19 cases | 20 | 80 |
COVID-19 cases if subjects had not been vaccinated | 400 | 400 |
Averted COVID-19 cases | 380 | 320 |