I'd just like to clarify in answering your question that the COVID-19 immunity task force is not focusing on testing, either with antigens or with the real-time PCR, RT-PCR. However, I would say that the evidence from across countries is that where you have not only more aggressive or higher levels of testing but also much more timely determination of the results and follow-up of contacts, those countries are in a better position to control the epidemic
I think, again, in the spirit of learning, that Canada has a lot to learn with regard to how to manage testing systems such that they get to the populations where the problem is greatest and they're managed in such a way that you get timely results and can mobilize contact tracers in a way that mitigates the spread of infection. That being said, we need to look to our Atlantic provinces, where I think there's significant evidence of very good practice on that front thus far, and also take advantage of the way in which testing systems have been deployed in other countries.