In this circumstance, the specific regulatory action for those 20 or so companies was to indicate that they needed to relabel the medical devices. They could still be used, but not in the circumstance that an N95 level of filtration was needed. That relabelling is formally considered a recall. The specific regulatory action requested was to label in accordance with Health Canada direction to ensure that devices are used in an appropriate way.
On May 22nd, 2020. See this statement in context.