That's just it, it's not just the compromised people who have to be careful in public area, it's everybody who has to be cautious in public areas. If I wear a mask and others don't, the transmission of the virus can happen on any surface they may touch, cough or sneeze on. We need to open the economy, BUT we need to do it with everybody on board. Why wouldn't someone wear a mask when their out in public ?? Where is the down side.
