Thank you very much, Madam Chair.
Thank you very much to each one of the witnesses.
I've found today's testimony incredibly helpful. I say that because there's been a flurry of activity in different jurisdictions and contact tracing is obviously of great interest. However, to step back from the technical details, I want to ask each of you a very short question.
For contact tracing to work, in each one of your estimations, what percentage of the population of a jurisdiction has to participate or has to be part of that process? Could you provide me with numbers?
Mr. Perron.