Social distancing is a public health practice that aims to prevent sick people from coming in close contact with healthy people in order to reduce opportunities for disease transmission. It can include large-scale measures like canceling group events or closing public spaces, as well as individual decisions such as avoiding crowds.
The goal of social distancing in response to COVID-19 is to slow down the potential spread in order to reduce the chance of infection and to reduce the burden on health care systems and workers. Experts describe this as "flattening the curve," which generally refers to the potential success of social distancing measures to prevent surges in illness that could overwhelm health care systems.
Practicing social distancing:
The CDC defines it as "remaining out of congregate settings, avoiding mass gatherings, and maintaining distance (approximately 6 feet or 2 meters) from others when possible."
It's particularly important to maintain that same 6-foot distance from anyone who is demonstrating signs of illness, including coughing, sneezing, or fever.
Along with physical distance, proper hand-washing is important for protecting not only yourself but others around you—because the virus can be spread even without symptoms.
Other ways to limit the spread of disease:
Other public health measures could include isolation and quarantine. According to the CDC's latest guidance:
Isolation refers to the separation of a person or people known or reasonably believed to be infected or contagious from those who are not infected in order to prevent spread of the disease. Isolation may be voluntary, or compelled by governmental or public health authorities.
Quarantine in general means the separation of a person or people reasonably believed to have been exposed to a communicable disease but not yet symptomatic from others who have not been so exposed in order to prevent the possible spread of the disease. With COVID-19, the CDC has recommended a 14-day period to monitor for symptoms.