The clinical trials are actually the same (statistical power) as previous vaccine trials. They've simply enrolled more people faster and had a higher infection

The clinical trials are actually the same (statistical power) as previous vaccine trials. They've simply enrolled more people faster and had a higher infection rate to evaluate safety and efficacy. It is likely in the next month that Pfizer will get a standard (non Emergency Use) Authorization. https://www.biospace.com/article/pfizer-biontech-and-moderna-aim-for-full-fda-approval-of-covid-19-vaccines/ https://www.biospace.com/article/pfizer-biontech-and-moderna... The reason for EUA was that so many people were dying that some more limited (<1yr clinical safety) data was accepted. Now that many of the original subjects are falling past 1yr post inoculation (and variants have been evaluated) a full authorization in eminent. Previously, people worried that once one vaccine was authorized other EUA (NovaVax, AZ/ChadOx, etc) wouldn't happened, has also been resolved since the FDA realizes people want choice.