COVID-19 is caused by the SARS-CoV-2 virus, which can present a diverse array of symptoms. These symptoms commonly include fever, cough, shortness of breath, fatigue, loss of taste or smell, muscle aches, sore throat, congestion or runny nose, headache, nausea or vomiting, and diarrhea.

It is important to note that while many individuals with COVID-19 have mild to moderate symptoms and recover without complications, there are cases where the condition can progress to severe respiratory distress, pneumonia, or necessitate hospitalization. The range of symptom severity highlights the necessity for effective treatments.