there is no need for fentanyl vaccine. Junkies who chase high will just switch to something else and OD themselves.<p>The psychological dependency on drugs should be treated, but this is much harder problem tightly coupled with larger societal problems. I would love to read research on differences in drug problems in countries with less societal stress and more happiness vs more stress and less happiness.<p>In the end fentanyl is simply a painkiller, people choose to get high to run away from their life problems. In the mind of patient, the risk of getting OD and becoming drug addict is a better decision, rather than facing grim reality of their daily life and future prospects.