Mr. Brendan Gleeson:

I will ask Dr. Blake to correct me if I say anything incorrect here. This is something the UK is looking at. We do not have an ideological position on it but my understanding is that it can affect trade in live animals and one of the difficulties is that it can be hard to tell the difference between a vaccinated animal and a positive animal.

Those are issues that have to be resolved. Dr. Blake may wish to elaborate on some of that.