Day 1: KPT COVID-19 Pearl of the Day is: Don't Share Your Air. At the most basic level, COVID-19 is spread when infected people without proper face-coverings speak, shout, chant, sing, or breathe heavily such as during exercise, producing tiny viral aerosols, and then someone sharing their their air breathes them in. This is not the only way you can catch it or spread it but viral aerosols seem to be the chief vector of transmission. Since about half of people with active COVID-19 don't show symptoms, we should be very careful not to breathe in shared air with anyone outside of our household. The best way to do that is to isolate as much as we can and when we need to be out and around others, we should keep our face-coverings on at all times. Tomorrow's post will go into some detail about face-coverings.