As soon as I started reading it I remembered it from sometime before. If anyone else has that feeling the pre-print(or a similar paper that they ended up changing up a bit) was submitted in late 2021.
https://www.biorxiv.org/content/10.1101/2021.12.28.474326v1.full
Yeah, I think we've already proven that anything shown to help will end up too expensive for the average person.
We should pool resources and knowledge to make our own.
@BE
I think I've seen a half dozen novel prophylactic strategies, some of them pretty complex. The powers that spread Covid feel by obligation to deliver these technologies to the masses. They'll use them themselves, I'm sure, but will not share.