Table 1.

Symptoms assessed in the first questionnaire

Fever	Cough	Sputum
Poor concentration	Fatigue	Alopecia
Memory impairment	Headache	Sore throat
Muscular weakness	Unconsciousness	Diarrhoea
Abdominal pain	Numbness	Myalgia
Eye-related symptoms	Dyspnoea	Arthralgia
Hypersensitivity to sound, light and smell	Tinnitus	Rash
Sleeping disorders	Olfactory disorders	Taste disorders