[maxerickson]

Pfizer is in the process of completing the normal licensing process: https://www.pfizer.com/news/press-release/press-release-deta...

What's the next hurdle after that for being 'properly' tested?

[grillvogel]

vaccines are supposed to have years of testing to prove they are truly safe in the long term. your own link says pfizer is trying to extend the emergency use authorization to apply to younger people, nothing about completing approvals. true FDA approval is still years away.

[maxerickson]

The headline is Pfizer and BioNTech Initiate Rolling Submission of Biologics License Application for U.S. FDA Approval of Their COVID 19 Vaccine

Biologics License Application for U.S. FDA Approval is the final thing. The next step after that is safety monitoring of the fully licensed product.

The 16 and over there is about the applicability of the resulting BLA.