Table 1 Included English and Japanese keywords search for Google Trends

Malaise

fatigue

tired

Anorexia

diarrhea

constipation

Abdominal pain

stomach ache

nausea

Chest pain

dyspnea

vomiting

Shortness of breath

short of breath

pneumonia

Cough

sputum

rhinitis

Runny nose

nasal discharge

stuffy nose

Sneeze

sore throat

throat pain

Fever

chills

cold

Sense of smell

loss of smell

anosmia

Sense of taste

loss of taste

dysgeusia

Hair loss

loss of hair

bald

Myalgia

muscle pain

body aches

Arthralgia

joint pain

pain

Eye pain

sore

congestion

Headache

memory loss

confusion

Vertigo

dizziness

dizzy

Insomnia

anxiety

numbness