The situation changes drastically around biosecurity when there is a reportable disease found on a premises. The day-to-day biosecurity is voluntary, but when we find a disease like the highly pathogenic avian influenza, the biosecurity becomes a requirement. A facility or premise may be put under quarantine. Things don't leave and they don't go in. We have a primary control zone. It controls movement of things into the zone, through the zone and out of the zone.
All these efforts are to ensure that the disease that is significant in nature, which all reportable diseases are, is contained and eliminated. Biosecurity measures become mandatory to some degree. That includes quarantine and not allowing things to move out unless they are properly monitored and approved. It's a different situation around biosecurity when there is a reportable disease.