Your doctor is allowed to use medicines already on the market for off label purposes.
The article says this vaccine is still on the market.
See if your doc can/will try to obtain a dose. If he won’t, another one might.
Having said that, while it’s prob a well vetted vaccine, this use hasn’t been gully investigated for negative outcomes. If my child had dm1, I’d strongly weigh those pros and cons.
If this vaccine is still being used in developing nations, that means there are millions of doses out in the marketplace.
I dedicated person should be able to procure a dose, even if they had to take a foreign vacation to do do...