Abbysmum said "A similar question was posed to Dr. Roussin a few weeks ago at one of the press conferences. His answer basically was that if there were a bunch of unidentified cases out there, even asymptomatic ones, they would be spreading it and our hospitalization numbers would reflect that. There hasn't been that spike in hospitalizations that is expected with this infection circulating undetected.
Of course, there's always a lag, so we always get a picture of where the virus was 2 weeks ago, not where it is now.
That being said, because there is that lag, you do need to behave like it's everywhere, because it could be. It's becoming increasingly clear that asymptomatic and pre-symptomatic people are contagious. More robust testing of everyone, sick or not, would give a better picture of what the *current* situation is, but then it becomes a capacity issue.
The current consensus seems to be that you need to go 2 full incubation cycles (i.e. 4 weeks) to say with reasonable certainty that you've staved off the worst or run it's course (depending on it's situation). "
Yup, it's that lag that's going to get us.