TABLE 1.

Tasks of the questionnaire

Symptom	Occurence	Expected VAS
Runny nose, sneezing, stuffy nose, nasal pruritus, facial/nasal pain, ocular itch, ocular pain, Ocular redness, >3 nasal symptoms, smell dysfunction, taste dysfunction, dyspnea, cough, wheezing, sore throat, headache, fatigue, fever, duration of illness >1 week, undulating symptoms, gastrointestinal symptoms, skin symptoms, body/muscle ache, arthralgia, altered consciousness	Choice between: (none, very rare, possible, common, always) or (yes, no)	(grade from 0–10)