Thanks very much for the question, because it's one of those eternal questions. The principles that underlie the recommendations in terms of priority are those who are most likely to be seriously ill or die, so protecting life, and then protecting essential functions. Clearly police, fire, first responders, central services, etc., obviously come into the category of essential services, trying to minimize disruption in the face of an outbreak, etc.
With H1, clearly firefighters and others who were at risk of severe disease were in the first tier, but we found that with people of that age, it was not a threat to civil society. If it had been, if they were either at greater risk or there was an issue of access, then clearly they would have moved up the queue.
We also had antivirals, which were very effective, so we found early treatment was particularly effective during the pandemic. Even if somebody—a firefighter, doctor, or whoever—became ill, getting immediate treatment shortened the duration and reduced the severity as well. As it turned out, we were able to manage that without changing the priorities, ensuring that those who were at greatest risk of getting severely ill and dying had first access. In Canada, we essentially wiped out the pandemic before Christmas, which no other country can say.