Earlier quoted context omitted.
They confirmed this when the vaccines were authorized. And as part of every drug, there's continual, ongoing, review of the data to ensure that safety is maintained, and that nothing has changed about the drug and its manufacturing. This is the "phase 4" of a drug, continual ongoing monitoring.
> They confirmed this when the vaccines were authorized No. They didn’t. They said it. You were the Phase3 trial. You can probably debate the ethicality, the decisions made, but do not pretend they had 5 year data before deploying to the entire world. Facts matter.
Dec 11 2020- publication of phase 2/3 trial results, meaning not only was the study fully completed, but it made it through peer review too: https://www.nejm.org/doi/full/10.1056/NEJMoa2034577
Dec 11 - 2020: first authorization https://www.nytimes.com/2020/12/11/health/pfizer-vaccine-aut...