Let me give you a few examples. If you are a household contact of somebody who tests positive for COVID-19, you have to isolate for seven days. Practically no other country in the world requires this, but the impact of it is that a person who tests positive can be out of action for 14 days. How is that possible? Well, your partner or someone in your household tests positive, you're out for seven days; around the end of that period, you also test positive—that's another seven days for your own case. Now, you might only be infectious for a few days of that, but you're out of the workforce for 14 days.