Professor Patricia Kearney:

That is really problematic. As we have seen with the green list, it is a bit of a moveable feast. Consequently, the strategy for us, as we have said, is the idea of zero transmission. As there is a risk of importation of positive cases from other places, what we need to focus on is having the appropriate structures in place to identify anyone who is positive coming in and to ensure there is no forward transmission from that person.