Thank you, Minister. Yes, of course. When we started our annual testing programme, which has been in place for over 10 years now, we inevitably found more TB breakdowns and more infected cattle over a shorter space of time, because we were doing more testing over that period of time. And then we saw a reduction in the incidents, the number of breakdowns, and that's good, but there are other parameters of TB eradication that we have to take account of, and you will be familiar with farms that have had a TB breakdown and then six months or 12 months later they go down with TB again. And the overriding question always is: has new TB arrived on that farm, or is it that we left infection behind when we lifted restrictions? It's never a simple answer, but, in order to make sure we don't leave infected cattle behind, what we've been doing is increasing the sensitivity of the test, and also being more draconian with animals that are what we call inconclusive reactors, which I'm sure you're familiar with. So, as we increase the sensitivity of the test, we have been finding more animals that are actually infected with TB that, in the past, using different testing arrangements, we may have left behind on the farm.
So, as a result of testing more sensitively, of course you'd expect to see more infected cattle, and the number of animals being slaughtered will increase for a period. But if you look at our most recent TB dashboard—and once again we'd be very happy to share a link to that dashboard with the committee after this—you will see that, over the last couple of years, there has been a gradual reduction, not just in the number of new incidents, but also in the number of cattle that we're slaughtering, even though we're using more sensitive tests. So, everything we're doing is working towards reducing the number of farms that are affected, but also of course making sure that, within those farms that we regard as clear, we have found all infected cattle.
So, it's a balance and, if you look at long-term trends on TB figures for Wales, you will see that the number of cattle slaughtered has fluctuated over the years as we've introduced these more sensitive tests, but everything we're doing, as I say, is aimed at wiping out infection altogether. And I totally agree that the ideal arrangement would be to have fewer cattle slaughtered, which is part of our aim and part of what success looks like, along with fewer farms caught up with TB, and, again, if you look at the figures over the last 10, 12 years, you will see there are half as many farms now suffering a TB breakdown than there were when we started this process. Of course, if you are one of those farms, one of those 600 farms that's having a breakdown right now, that is cold comfort, and so what we've got to do is stop the introduction of disease across the board. But this is a complicated and a very long-term journey. We recognise that.