Organisations like Kaleidoscope, working as part of the Gwent drug and alcohol project, are concerned at the difficulties in ensuring good vaccination take-up amongst service users. Their front-line workers have very strong relationships of trust with those service users. They're in regular contact with them and understand the difficulties of chaotic lifestyles. Minister, would you agree that those front-line workers are well placed to actually deliver the vaccinations, given their own training and backgrounds and willingness to undergo any additional training that may be necessary? Allowing them to do that would be one way of ensuring good take-up of vaccine amongst this very vulnerable group.