They’ve been used for a while in the U.S. It’s what President Trump got when he came down with covid and it’s a pretty standard treatment for high risk people.
RE: it’s a pretty standard treatment for high risk people.
Just make it standard for everyone.
If you have Covid and have to ask a doctor to be treated with it, then that doctor is not worth visiting. A good doctor SHOULD have heard about it and should be learning about it.
And they are really fun to make!