Symptoms of COVID-19 are similar to other respiratory illnesses including the flu and common cold; there are no specific symptoms or signs that can reliably distinguish COVID-19.
Symptoms may include one or more of the following:
- sore throat
- loss of sense of taste or smell
- abdominal pain
Some people experience mild symptoms or no symptoms at all.
In more severe cases, infection can cause pneumonia, respiratory failure, shock or multi-organ dysfunction.
Older people or those with chronic illnesses may be at higher risk for a more severe form of the disease. Examples of comorbidities and other conditions associated with severe illness and mortality include cardiovascular disease, diabetes mellitus, hypertension, chronic lung disease, cancer, chronic kidney disease, obesity and smoking.