• Shortness of breath
• Dehydration
• Generalized weakness
• Co-existing conditions, such as emphysema, diabetes and congestive heart failure. 

Flu shots are a very effective preventive measure. If you haven't had your flu shot yet, be sure to visit your primary care physician. If you need a doctor, visit our online physician directory to find one who's right for you.

For more information about the flu, including signs and symptoms, visit our special flu section.