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Flu
Flu Learning Center

Flu
The flu is a contagious infection of the nose, throat, and lungs caused by the influenza virus.
Influenza, commonly known as the flu, is a contagious respiratory disease caused by the influenza virus. The virus attacks cells in the...
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A variety of tests can determine the type of influenza virus in less than 30 minutes, though they are not as accurate as tests that take...
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The flu can be a serious health risk for some people. Find out who's at a greater risk for contracting or developing secondary infections...
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