I want to talk about the issue of waning.
We know that we get a vaccine and it seems to be very effective at preventing hospitalization, serious illness and death for a period of time. I think in your opening statement you said that data from Ontario shows there's a negative vaccine efficacy by the second month in those fully vaccinated, and boosters show similar rapidly waning timelines.
Can you expand on that, particularly what is meant by “negative vaccine efficacy”? How long do the vaccines stay effective?