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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.

Recommended Related to Cold & Flu

Swine Flu: 10 Things Not to Do

Swine flu (H1N1) has been in the news since it first appeared this spring, and while there have been deaths and hospitalizations in countries worldwide, most cases have been relatively mild. And now, there is an H1N1 swine flu vaccine, too. That's the good news. But the bad news is, swine flu can still be serious, and it's still widespread. With that in mind, here are 10 swine flu "don'ts" -- things not to do for swine flu prevention.

Read the Swine Flu: 10 Things Not to Do article > >

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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