Thank you, Minister, for that answer. In your statement his morning, obviously you highlighted what will be critical to delivery of the vaccine programme, whichever vaccine it's going to be—which will be the staff and the individuals charged with undertaking the work on the ground. You said training exercises have been undertaken with various staff across Wales. Can you assure us that those exercises have taken account of the various differences between the vaccines? What is the initial feedback over the total workforce that might be required to do a national vaccination programme in the coming weeks and months ahead?