- Mild to moderate sore throat, i.e. rated as 1 or 2 on a 4-point ordinal scale (0=not present, 1= mild, 2=moderate, 3=severe), or headache (1, 2 or 3) or fever (less than 39°C ) or/and Nasal congestion (blocked nose): may be accompanied by rhinorrhea (runny nose) and/or sneezing