The world is not going to begin to look normal until three things have happened. One, we figure out whether the distribution of this virus looks like an iceberg, which is one-seventh above the water, or a pyramid, where we see everything. If we're only seeing right now one-seventh of the actual disease because we're not testing enough, and we're just blind to it, then we're in a world of hurt. Two, we have a treatment that works, a vaccine or antiviral. And three, maybe most important, we begin to see large numbers of people—in particular nurses, home health care providers, doctors, policemen, firemen, and teachers who have had the disease—are immune, and we have tested them to know that they are not infectious any longer. And we have a system that identifies them, either a concert wristband or a card with their photograph and some kind of a stamp on it. Then we can be comfortable sending our children back to school, because we know the teacher is not infectious.

And instead of saying "No, you can't visit anybody in nursing home," we have a group of people who are certified that they work with elderly and vulnerable people, and nurses who can go back into the hospitals and dentists who can open your mouth and look in your mouth and not be giving you the virus. When those three things happen, that's when normalcy will return.

Eoin Treacy's view

Testing, testing, testing. This virus story is not going to be controlled until we have widespread and repeated testing. Without that self-imposed quarantine is a stop gap measure.