Coronavirus disease (COVID-19) is a virus-borne infection caused by the SARS-CoV-2 virus.

Most patients infected with the virus will have mild to severe respiratory sickness and will recover without needing any specific therapy. Some, though, will get very ill and require medical treatment. People over the age of 65, as well as those with underlying medical disorders such as cardiovascular disease, diabetes, chronic respiratory disease, or cancer, are at a higher risk of developing serious illnesses. Anyone of any age can become very ill or die as a result of COVID-19.