Viruses are spread by droplets and aerosols that come from coughing, sneezing, talking, and breathing. Larger droplets can land on surfaces up to seven feet from the source. Hand washing and constant surface cleaning reduce the risk of transmission. And social distancing reduces the risk of infection due to droplets. However, small infectious aerosols follow air currents, and can spread far from the source. This has FORCED restaurants to implement limited and outdoor dining.