Pfizer has already stated that it needs to have a booster dose at the end of the two that are being given. I would say that probably if we can try to stay on top of things from an administration point of view, we'd want to try to get the third dose in before the end of the year. Obviously that requires coordination between the federal government, the provinces, the municipalities and the hospitals.
People are starting to reformulate for the variants because as they become more serious and the spike protein changes, those vaccines become less effective. It's very similar to the flu vaccines in terms of having those additional doses.