Thank you very much for that question, Mr. Chair.
I think there is no denying that vaccines are extremely foundational to our response to COVID-19, and right now the National Advisory Committee on Immunization has provided recommendations, including up-to-date vaccination booster doses, particularly for the high-risk populations. I think it is really important that anyone for whom the booster is recommended and who is eligible get that at this point.
Increasing vaccination in the general population and in targeted ways requires a multipronged approach. I do think that when vaccine mandates were introduced by provincial and territorial governments, and also the federal government for its own area of rules and responsibility, they occurred at a time before omicron, when we saw extremely high vaccine effectiveness against both infection and severe outcomes. Omicron changed that picture, but we know there are certainly studies, including from Simon Fraser University, that show the initial impact, collectively, of the vaccine mandates that were implemented around mid-August, which saw an increase in coverage. But that's different in each jurisdiction, and I think that needs to be studied at a more granular level in terms of the impact of vaccine mandates.
Going forward, I think there is a movement, certainly in the provincial and territorial setting, to move from requirements to recommendations. That's going to be really all hands on deck yet again, using all kinds of techniques to improve vaccine confidence, providing the information that patients and individuals need, and that information has to be provided by credible sources, trusted by the community, including indigenous leaders and racialized communities and their leaderships.
I think there are multipronged ways in which we encourage, recommend and get people to get that additional dose. As the Minister of Health said, the number is not really very high. I am, though, encouraged that booster doses are quite high in the higher-risk populations, but I think in the 50-plus portion, we need to up our game on that coverage. I think all of this can be used—