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Flu Season

Due to the unexpected shortage in flu vaccine preceding the 2004-2005 flu season, only those at high risk for developing complications should be vaccinated this year.

The flu is a contagious respiratory illness caused by influenza viruses and infection can result in severe, life-threatening complications. An estimated 10 percent to 20 percent of the U.S. population gets the flu each year. An average of 114,000 people are hospitalized for flu-related complications and over 36,000 Americans, mostly among the elderly and frail, die each year from flu-related complications. In addition, young children between 6 months and 2 years of age have an increased risk for serious complications. That said, for most people, coming down with the flu this season will be an inconvenience but not a serious health issue.

With fewer people getting flu shots this year, it is important to learn how to reduce your risk, limit transmission and recognize signs that you or a loved one need medical attention.

For more information about the flu, please read:

• Facts About the Flu -- Prevention, symptoms, transmission, diagnosis, treatment and complication information

• Children and the Flu -- Information specific for children, including how to reduce your child's risk of getting the flu and when to seek medical help

• Cold or Flu? -- A comparison of cold and flu symptoms

• The Flu: When to Call Your Doctor -- Tips on evaluating whether to seek medical advice and assistance when you have the flu

Reviewed by health care specialists at UCSF Medical Center.
Last updated May 8, 2007

This information is for educational purposes only and is not intended to replace the advice of your doctor or health care provider. We encourage you to discuss with your doctor any questions or concerns you may have.