Q: How should we determine which businesses should stay open?

Gates: The question of which businesses should keep going is tricky. Certainly food supply and the health system. We still need water, electricity and the internet. Supply chains for critical things need to be maintained. Countries are still figuring out what to keep running.

Eventually we will have some digital certificates to show who has recovered or been tested recently, or when we have a vaccine, who has received it.

The first vaccines we get will go to health care workers and critical workers. This could happen before 18 months if everything goes well but we and Fauci and others are being careful not to promise this when we are not sure. The work is going at full speed.