Also with respect to Johnson & Johnson's efficacy, Dr. Fauci has already stated that with a booster you could well get closer to 90%. My understanding is that with AstraZeneca—with all the vaccines—you could add another booster to increase efficacy.
I thought I'd first like to comment on the relative efficacy of these. More importantly, however, I know Health Canada has to do its due diligence and approve these vaccines, but what is the likelihood that they're going to get approved and what will that mean in terms of time frames for distribution? I know Dr. Bogoch is on the Ontario task force on vaccines. What is your thinking in terms of how fast we'll be able to get vaccines out, if and when these other vaccines are approved?
I'll start with Dr. Bogoch, then maybe Dr. Attaran can also reply.