Needle vs needle: a vaccine for drug addiction?

Research suggests that we could soon see vaccines for addiction
The Guardian (UK)
Thursday, July 14, 2016

needle-researchApparently they are working on a vaccine for drug addiction (specifically, opiate addiction). There are already studies into vaccinating against cocaine use, so maybe we could end up with a suite of anti-drug vaccines. Now there’s something to make a neuroscientist sit up and pay attention. A new weapon in the war on drugs? How can you even do that? How do you vaccinate against a type of behaviour? How can we vaccinate against behaviours? And if it is effective, what are the ethical issues?