If you tested positive for COVID-19 or if you develop a fever, cough, or shortness of breath, you should stay away from others (isolate yourself). How to isolate.
If you don’t have symptoms but know you have been in close contact with someone who has been diagnosed with COVID-19 or has symptoms (fever, coughing, shortness of breath), you should quarantine yourself. How to quarantine
If you are having a medical emergency, call 911. Tell the dispatcher your symptoms.