Generally speaking, when it's a recall, it is from CFIA. In terms of voluntary versus mandatory, there really isn't a difference. The mandatory recall occurs only if a firm was determining that it would not do a recall when CFIA thought it should be. All recalls are reacted to in the same fashion, and the information that triggers the recall is the information that comes from CFIA.
On May 6th, 2009. See this statement in context.