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What is the flu?


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Flu Influenza (commonly called the flu) is a contagious respiratory illness caused by the influenza viruses.

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The flu is a respiratory illness caused by the influenza virus. The flu is not the same as a cold, although they share many of the same symptoms.

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Influenza, often called the flu, is an acute, highly contagious infection of the respiratory tract which commonly occurs in the winter. Thanks for using ChaCha!

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The flu is an acute viral infection of the respiratory tract caused by one of three strains of influenza virus (A, B, and C).

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Influenza can infect the nose, throat, and lungs causing fever, coughing, chills, sore throat, headache, and muscle aches. ChaCha!

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The flu is an acute febrile highly contagious viral disease.

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Flu is the common name for influenza, a virus that attacks the respiratory system. Usually when you're sick with a virus, (MORE)

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