Thank you very much, Chair.
First of all, I do want to thank all the witnesses for coming today and sharing their thoughts with us.
In particular, I would like to thank Dr. Tam for all that she has done over the last several months. Really, it's been day in and day out. I can't tell you how impressed I've been with your demeanor, Dr. Tam, throughout this entire situation, so my first question is for you.
Dr. Tam, you and I both know that contact tracing is an essential part of infection control, and this function is formed by local public health units across the country. It's very labour intensive, and it also requires quite a bit of skill in terms of investigative skills and diplomacy, because quite often people don't actually want to disclose where they might have been and who they've been with.
It has been a real struggle here in York Region. I know that our public health staff are working so hard. There has been a real effort to provide the search capacity given the number of positive cases here. Now we're hearing about contact tracing apps and, potentially, their use in a situation such as we're facing at the moment. Could you give us some of your thoughts about whether contact tracing apps could provide some relief to what is currently being done through our public health units?