This information comes from the U.S. Centers for Disease Control and Prevention (CDC) website.
COVID-19 is believed to be spread person-to-person through respiratory droplets, like other diseases caused by the family of viruses known as coronaviruses. Recommended steps to minimize infection risk include:
Symptoms including fever, cough, and shortness of breath may appear 2–14 days after exposure to COVID-19.
If you show symptoms, have traveled from an area with an ongoing spread of COVID-19, or have been in close contact with a person known to have COVID-19, contact your healthcare provider, who will work with guidance from public health officials to determine if you need to be tested.
The CDC recommends that facemasks be worn by those who have COVID-19 and show symptoms, in order to protect others from the risk of infection. The organization does not recommend wearing face makes as an effective means of protecting oneself from infection.