Table 2. Clinical features of patients with a varying degree of disease.

Mild disease	Severe disease	Critical disease
Dry Cough	Fever	Respiratory failure
Fever	Tachypnea	Fever
Sour throat	Dyspnea	Decreases blood oxygen saturation
With or without nasal congestion		Septic shock
Generalized body aches		Multiple organ failure
Headache
Malaise and fatigue