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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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Planes, Cruise Ships, and Germs

Flying to great-aunt Erma's house for Thanksgiving? Or taking a leisurely wintertime cruise along the shores of the Mexican Riviera? Boost your chances of healthy travel by taking a few preventive steps. That way, you'll cut your risk of catching cold and flu from other plane passengers. And you won't be confined to your cabin on the cruise ship, battling a nasty case of gastroenteritis while other passengers are off enjoying the sights.

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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.

    WebMD Medical Reference from Healthwise

    Last Updated: September 09, 2014
    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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