Patienterne var valgbare, hvis de meldte sig senest 36 timer efter symptomerne var begyndt, havde feber ≥ 37, 8 ° C, ledsaget af mindst et respiratorisk symptom (hoste, nasale symptomer eller ondt i halsen) og mindst et systemisk symptom (myalgi, kulderystelser/ sveden, utilpashed, træthed eller hovedpine).
Patients were eligible if they reported within 36 hours of onset of symptoms, had fever ≥ 37.8 °C, accompanied by at least one respiratory symptom (cough, nasal symptoms or sore throat) and at least one systemic symptom (myalgia, chills/ sweats, malaise, fatigue or headache).