| Symptom | Flu | Cold |
| Fever | High (over 101) for 3-4 days) | Rare |
| Cough | Dry | Hacking |
| Headache | Prominent | Rare |
| Myalgia | Often severe | Slight |
| Tiredness/Weakness | 2 to 3 weeks | Very mild |
| Extreme Exhaustion | Early and Prominent | Never |
| Chest Discomfort | Common | Mild to moderate |
| Stuffy Nose | Sometimes | Common |
| Sneezing | Sometimes | Usual |
| Sore Throat | Sometimes | Common |
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