The prevention and treatment of viral respiratory disorders
A briefing from the Board of Science
September 2007
Symptoms
Many of the symptoms of the common cold and influenza are similar; for example, both infections can present with a blocked nose, sore throat or fatigue. Those symptoms associated with influenza however, are generally more severe. There are also a number of symptoms specific to influenza.
Comparison of the symptoms of influenza and the common cold
| Symptons | Influenza | Common cold |
| Fever | Usually high; lasts 3-4 days | Not usual |
| Headache | Yes | Not usual |
| General aches, pains | Usual; often severe | Slight |
| Fatigue, weakness | Can last up to 2-3 weeks | Mild |
| Extreme exhuastion | Early and severe | Never |
| Blocked nose | Sometimes | Common |
| Sneezing | Sometimes | Usual |
| Sore throat | Sometimes | Common |
| Chest discomfort | Common; can be severe | Mild to moderate |
| Cough | Hacking cough | Usually none |
| Complications | Bronchitis, pneumonia; can be life-threatening | Sinus congestion; earache |
Source: www.brandonrha.mb.ca/export/sites/brandonrha/galleries/img/Community_Care/Flu-Chart-web.jpg (accessed 13 June 2007).