My source is FDA:
Vaccine was approved on August 23, 2021, but was used since December 11, 2020.
In other words most people in US received first dose until it was fully tested.
https://www.fda.gov/news-events/press-announcements/fda-appr...
If you're not sure, then just don't say anything or perhaps frame it as a question.
It is true that is a weaker standard than "FDA Approved" but it is still a high standard and certainly not "no testing".
Notice I’m not saying it’s good or bad, it’s just what the facts are.
> An EUA can only be granted when no adequate, approved, available alternatives exist, and when the known and potential benefits outweigh the potential risks.
> It is the job of the FDA to ensure medical products meet rigorous safety and efficacy standards, a process that can take years for what’s called “full approval.” Though that timeline is condensed when an EUA is granted, the FDA still upholds its strict standards.