Hmm, did not know that. Very interesting, If true.
“An EUA (Emergency Use Authorization for the vaccines) allows use of unapproved medical products (or unapproved uses of approved medical products) to diagnose, treat, or prevent serious or life-threatening diseases or conditions caused by threat agents, such as Covid-19, in response to a declared public health emergency for which there are no adequate, approved, and available alternatives.” Emphasis added.
https://www.nejm.org/doi/full/10.1056/NEJMp2031373