If we consider the wording of the case in question, as soon as possible before a conveyance arrives in Canada, essentially, that is as soon as it is aware of the situation. So once the operator has reasonable grounds to suspect that someone on board the conveyance is infected with one of the communicable diseases listed in the schedule, or that a person has died, or other prescribed circumstances, the operator must disclose that fact as soon as it is aware of it. That will therefore always be a question of fact that will have to be proved afterward. Our main concern is that once the operator is aware of the situation, it must inform a quarantine officer or cause a quarantine officer to be informed.
On June 4th, 2007. See this statement in context.