COVID-19 is a disease caused by a type of coronavirus, which is a family of viruses common in humans and many different animals. The type of coronavirus that causes COVID-19 is called SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2). Viruses in this family can cause respiratory illnesses ranging from the common cold to more severe diseases. Cases of COVID-19 can be mild, but others can be more severe and sometimes deadly—especially for older adults or those living with other chronic health conditions.
The best protection against COVID-19 is to be up to date with your vaccines.