You raise a very important point, and I think you're right: there is no simple solution. Just this morning, I have had a meeting with officials, and that included people who were doing research into this area. You will be aware that, as part of the refresh of the eradication programme, one of the things I promised to bring forward was a target for when I would like to be officially TB free here in Wales, and that is an element of the discussions that we've been having. So, I think it is about bringing many enhanced measures together, but certainly research and development. Going forward, we need to be looking at absolutely everything and learning from other areas and other countries also.