“The anti-fentanyl antibodies were specific to fentanyl and a fentanyl derivative and did not cross-react with other opioids, such as morphine. That means a vaccinated person would still be able to be treated for pain relief with other opioids,” said Haile.
The reply above that the real issue is WHY Americans like fentanyl so much is on the money in my opinion.
One catch is that if you're undiagnosed with some problem like mine (Brugada Syndrome) you might get the vaccine before you know that's a bad idea. I have, in the past, been dependent on opioids thanks to my broken body, and yeah, getting off them has challenges. But I think the key is WHY some people like them so much. There's something a bit off when the aim is to take so much you vomit but don't die, which I'm given to believe is the "ideal" recreational dose.