Table 1.

The list of features used in the machine learning algorithm.

Symptoms	o anorexia	o fever	o shortness of breath
	o chest pain	o gasp	o somnolence
	o chills	o headache	o sore throat
	o conjunctivitis	o kidney failure	o sputum
	o cough	o lesions on chest radiographs	o septic shock
	o diarrhea	o hypertension	o Heart attack
	o dizziness	o Myalgia	o cold
	o dyspnea	o obnubilation	o cardiac disease
	o emesis	o pneumonia	o hypoxia
	o expectoration	o myelofibrosis	o fatigue
	o eye irritation	o respiratory distress	o rhinorrhea
Pre-existing Conditions	o diabetes	o COPD	o coronary heart disease
	o hypertensio n	o Parkinson's disease	o prostate hypertrophy
	o chronic kidney disease	o asthma	o Tuberculosis
	o hypothyroidism	o cancer	o hepatitis B
	o cerebral infarction	o HIV positive	o chronic bronchitis
	o cardiac disease	o dyslipidemia	o any chronic disease
Demographics	o age	o country	o province
	o gender	o city	o travel history