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Influenza (Seasonal Flu) - What Happens

Influenza (flu) usually comes on suddenly. In many cases people can pinpoint the hour when symptoms started. Symptoms develop 1 to 4 days after you are infected, and they include:

  • Fever, which lasts for about 3 days. Fever is usually slightly lower on the 2nd and 3rd days but may last up to 8 days.
  • Cough, runny nose, and sore throat, which become more noticeable as fever and other symptoms decrease. These symptoms usually last 3 to 4 days after the fever goes down. A dry, hacking cough may linger for up to 10 days after other symptoms are gone.

Complete recovery may take 1 to 2 weeks or longer. Fatigue and weakness can last for several weeks.

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How To Stay Well (When Everyone Else Is Sick)

By Janis Graham 'Tis the season...for colds, flu, stomach bugs, and all those other ills that spread when people come together — whether by choice (at holiday parties) or circumstance (on airplanes). But don't start calculating your sick days just yet. This year you can do more than wash your hands and cross your fingers. Recent research, some of it sparked by the scary H1N1 influenza pandemic of 2009, has uncovered new steps you can take to protect yourself and your family. Most...

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Complications of influenza may develop in anyone, but they are much more likely in older adults and people who have other health problems, especially heart and lung diseases.

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WebMD Medical Reference from Healthwise

Last Updated: January 15, 2013
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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