Let me see if I can understand the question properly.
Having broad ranges of vaccine was very important at the beginning of our vaccine program and our strategies, because we actually had very little information about how these vaccines were going to perform. The really fortunate thing for Canada is that all the authorized vaccines.... You've seen how incredible the mRNA vaccines have performed in clinical trials. It is important to have diversity in portfolio, but we also are very fortunate that our foundational vaccine backbone, which is the mRNA vaccine, including the Pfizer vaccine, is performing so well.