This section of the app highlights evidence for symptoms in adults which differ between mild, moderate and severe disease.

Key findings: The only symptom identified which may distinguish severe disease is shortness of breath/dyspnoea.

The clinical sign most indicative of severe disease is low oxygen saturation.

Delirium in frail elderly people may be associated with COVID-19, especially if other symptoms are not typical of COVID-19. 

See the full evidence review here