As I explained a little earlier, the problem that we are facing in Quebec and Canada in general is linked to a host of minor factors. There are parasites, but when the varroa parasite enters the colony, it weakens it. Bees also introduce viruses and other diseases that already existed, but that were not widespread. All of these factors are contributing to our loss of colonies.
In the United States, they say that the problem was colony collapse syndrome, but we do not really know what that statement was based upon. Exactly what CCD is has not really been defined. Therefore we cannot say that we have lost bees due to that problem. There are a host of factors.